72007149747451 has 2 divisors, whose sum is σ = 72007149747452. Its totient is φ = 72007149747450.

The previous prime is 72007149747443. The next prime is 72007149747497. The reversal of 72007149747451 is 15474794170027.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72007149747451 - 2³ = 72007149747443 is a prime.

It is a super-2 number, since 2×72007149747451² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72007149747551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36003574873725 + 36003574873726.

It is an arithmetic number, because the mean of its divisors is an integer number (36003574873726).

Almost surely, 2^{72007149747451} is an apocalyptic number.

72007149747451 is a deficient number, since it is larger than the sum of its proper divisors (1).

72007149747451 is an equidigital number, since it uses as much as digits as its factorization.

72007149747451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13829760, while the sum is 58.

The spelling of 72007149747451 in words is "seventy-two trillion, seven billion, one hundred forty-nine million, seven hundred forty-seven thousand, four hundred fifty-one".