10172238981 has 16 divisors (see below), whose sum is σ = 14305943040. Its totient is φ = 6411469680.

The previous prime is 10172238977. The next prime is 10172239043. The reversal of 10172238981 is 18983227101.

It is not a de Polignac number, because 10172238981 - 2² = 10172238977 is a prime.

It is a super-2 number, since 2×10172238981² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10172238931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153745 + ... + 209718.

It is an arithmetic number, because the mean of its divisors is an integer number (894121440).

Almost surely, 2^10172238981 is an apocalyptic number.

It is an amenable number.

10172238981 is a deficient number, since it is larger than the sum of its proper divisors (4133704059).

10172238981 is a wasteful number, since it uses less digits than its factorization.

10172238981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363976.

The product of its (nonzero) digits is 48384, while the sum is 42.

The spelling of 10172238981 in words is "ten billion, one hundred seventy-two million, two hundred thirty-eight thousand, nine hundred eighty-one".