72881055607 has 4 divisors (see below), whose sum is σ = 72884384560. Its totient is φ = 72877726656.

The previous prime is 72881055601. The next prime is 72881055629. The reversal of 72881055607 is 70655018827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70655018827 = 5233 ⋅13501819.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72881055607 is a prime.

It is a super-2 number, since 2×72881055607² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72881055601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1631418 + ... + 1675495.

It is an arithmetic number, because the mean of its divisors is an integer number (18221096140).

Almost surely, 2^72881055607 is an apocalyptic number.

72881055607 is a deficient number, since it is larger than the sum of its proper divisors (3328953).

72881055607 is a wasteful number, since it uses less digits than its factorization.

72881055607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3328952.

The product of its (nonzero) digits is 940800, while the sum is 49.

The spelling of 72881055607 in words is "seventy-two billion, eight hundred eighty-one million, fifty-five thousand, six hundred seven".