101877881557 has 4 divisors (see below), whose sum is σ = 101879951040. Its totient is φ = 101875812076.

The previous prime is 101877881543. The next prime is 101877881569. The reversal of 101877881557 is 755188778101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 755188778101 = 2383 ⋅316906747.

It is a cyclic number.

It is not a de Polignac number, because 101877881557 - 2⁷ = 101877881429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101877881257) 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, 959053 + ... + 1059970.

It is an arithmetic number, because the mean of its divisors is an integer number (25469987760).

Almost surely, 2^101877881557 is an apocalyptic number.

It is an amenable number.

101877881557 is a deficient number, since it is larger than the sum of its proper divisors (2069483).

101877881557 is an equidigital number, since it uses as much as digits as its factorization.

101877881557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069482.

The product of its (nonzero) digits is 4390400, while the sum is 58.

The spelling of 101877881557 in words is "one hundred one billion, eight hundred seventy-seven million, eight hundred eighty-one thousand, five hundred fifty-seven".