101311918580 has 54 divisors (see below), whose sum is σ = 215152028658. Its totient is φ = 40073245920.

The previous prime is 101311918559. The next prime is 101311918597. The reversal of 101311918580 is 85819113101.

It can be written as a sum of positive squares in only one way, i.e., 81049534864 + 20262383716 = 284692^2 + 142346^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 146616035 + ... + 146616725.

It is an arithmetic number, because the mean of its divisors is an integer number (3984296827).

Almost surely, 2^101311918580 is an apocalyptic number.

101311918580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101311918580 is an abundant number, since it is smaller than the sum of its proper divisors (113840110078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101311918580 is an frugal number, since it uses more digits than its factorization.

101311918580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597 (or 801 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 38.

The spelling of 101311918580 in words is "one hundred one billion, three hundred eleven million, nine hundred eighteen thousand, five hundred eighty".