101990323677 has 96 divisors (see below), whose sum is σ = 163198022400. Its totient is φ = 56432696320.

The previous prime is 101990323579. The next prime is 101990323691. The reversal of 101990323677 is 776323099101.

It is a happy number.

It is not a de Polignac number, because 101990323677 - 2¹⁸ = 101990061533 is a prime.

It is a super-2 number, since 2×101990323677² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101990323697) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 21546403 + ... + 21551135.

It is an arithmetic number, because the mean of its divisors is an integer number (1699979400).

Almost surely, 2^101990323677 is an apocalyptic number.

It is an amenable number.

101990323677 is a deficient number, since it is larger than the sum of its proper divisors (61207698723).

101990323677 is a wasteful number, since it uses less digits than its factorization.

101990323677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4899 (or 4888 counting only the distinct ones).

The product of its (nonzero) digits is 428652, while the sum is 48.

The spelling of 101990323677 in words is "one hundred one billion, nine hundred ninety million, three hundred twenty-three thousand, six hundred seventy-seven".