10155691988 has 18 divisors (see below), whose sum is σ = 19244737134. Its totient is φ = 4687242144.

The previous prime is 10155691967. The next prime is 10155692023. The reversal of 10155691988 is 88919655101.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 549339844 + 9606352144 = 23438^2 + 98012^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 7510931 + ... + 7512282.

It is an arithmetic number, because the mean of its divisors is an integer number (1069152063).

Almost surely, 2^10155691988 is an apocalyptic number.

It is an amenable number.

10155691988 is a deficient number, since it is larger than the sum of its proper divisors (9089045146).

10155691988 is a wasteful number, since it uses less digits than its factorization.

10155691988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15023243 (or 15023228 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 53.

The spelling of 10155691988 in words is "ten billion, one hundred fifty-five million, six hundred ninety-one thousand, nine hundred eighty-eight".