72269124491 has 2 divisors, whose sum is σ = 72269124492. Its totient is φ = 72269124490.

The previous prime is 72269124461. The next prime is 72269124523. The reversal of 72269124491 is 19442196227.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72269124491 - 2¹⁰ = 72269123467 is a prime.

It is not a weakly prime, because it can be changed into another prime (72269124461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36134562245 + 36134562246.

It is an arithmetic number, because the mean of its divisors is an integer number (36134562246).

Almost surely, 2^72269124491 is an apocalyptic number.

72269124491 is a deficient number, since it is larger than the sum of its proper divisors (1).

72269124491 is an equidigital number, since it uses as much as digits as its factorization.

72269124491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 47.

The spelling of 72269124491 in words is "seventy-two billion, two hundred sixty-nine million, one hundred twenty-four thousand, four hundred ninety-one".