72656701116667 has 4 divisors (see below), whose sum is σ = 72657026960400. Its totient is φ = 72656375272936.

The previous prime is 72656701116611. The next prime is 72656701116677. The reversal of 72656701116667 is 76661110765627.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72656701116667 - 2¹⁵ = 72656701083899 is a prime.

It is a super-3 number, since 3×72656701116667³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72656701116677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162587167 + ... + 163033432.

It is an arithmetic number, because the mean of its divisors is an integer number (18164256740100).

Almost surely, 2^{72656701116667} is an apocalyptic number.

72656701116667 is a deficient number, since it is larger than the sum of its proper divisors (325843733).

72656701116667 is a wasteful number, since it uses less digits than its factorization.

72656701116667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325843732.

The product of its (nonzero) digits is 26671680, while the sum is 61.

The spelling of 72656701116667 in words is "seventy-two trillion, six hundred fifty-six billion, seven hundred one million, one hundred sixteen thousand, six hundred sixty-seven".