72007149747455 has 16 divisors (see below), whose sum is σ = 93057380781120. Its totient is φ = 53173375004928.

The previous prime is 72007149747451. The next prime is 72007149747497. The reversal of 72007149747455 is 55474794170027.

It is a cyclic number.

It is not a de Polignac number, because 72007149747455 - 2² = 72007149747451 is a prime.

It is a super-2 number, since 2×72007149747455² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72007149747451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8755742 + ... + 14855211.

It is an arithmetic number, because the mean of its divisors is an integer number (5816086298820).

Almost surely, 2^{72007149747455} is an apocalyptic number.

72007149747455 is a deficient number, since it is larger than the sum of its proper divisors (21050231033665).

72007149747455 is a wasteful number, since it uses less digits than its factorization.

72007149747455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23657890.

The product of its (nonzero) digits is 69148800, while the sum is 62.

The spelling of 72007149747455 in words is "seventy-two trillion, seven billion, one hundred forty-nine million, seven hundred forty-seven thousand, four hundred fifty-five".