72499366399427 has 16 divisors (see below), whose sum is σ = 83983916817792. Its totient is φ = 61852778133120.

The previous prime is 72499366399391. The next prime is 72499366399429.

72499366399427 is nontrivially palindromic in base 10.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72499366399427 is a prime.

It is a super-2 number, since 2×72499366399427² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72499366399429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558576533 + ... + 558706310.

It is an arithmetic number, because the mean of its divisors is an integer number (5248994801112).

Almost surely, 2^{72499366399427} is an apocalyptic number.

72499366399427 is a deficient number, since it is larger than the sum of its proper divisors (11484550418365).

72499366399427 is a wasteful number, since it uses less digits than its factorization.

72499366399427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117283218.

The product of its digits is 6666395904, while the sum is 80.

The spelling of 72499366399427 in words is "seventy-two trillion, four hundred ninety-nine billion, three hundred sixty-six million, three hundred ninety-nine thousand, four hundred twenty-seven".