72901692498431 has 2 divisors, whose sum is σ = 72901692498432. Its totient is φ = 72901692498430.

The previous prime is 72901692498389. The next prime is 72901692498469. The reversal of 72901692498431 is 13489429610927.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72901692498431 - 2¹⁸ = 72901692236287 is a prime.

It is a super-2 number, since 2×72901692498431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72901692495431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36450846249215 + 36450846249216.

It is an arithmetic number, because the mean of its divisors is an integer number (36450846249216).

Almost surely, 2^{72901692498431} is an apocalyptic number.

72901692498431 is a deficient number, since it is larger than the sum of its proper divisors (1).

72901692498431 is an equidigital number, since it uses as much as digits as its factorization.

72901692498431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47029248, while the sum is 65.

The spelling of 72901692498431 in words is "seventy-two trillion, nine hundred one billion, six hundred ninety-two million, four hundred ninety-eight thousand, four hundred thirty-one".