101691994960 has 40 divisors (see below), whose sum is σ = 242200576296. Its totient is φ = 39684679680.

The previous prime is 101691994939. The next prime is 101691994979. The reversal of 101691994960 is 69499196101.

101691994960 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1793014336 + 99898980624 = 42344^2 + 316068^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15498549 + ... + 15505108.

Almost surely, 2^101691994960 is an apocalyptic number.

101691994960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101691994960 is an abundant number, since it is smaller than the sum of its proper divisors (140508581336).

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

101691994960 is a wasteful number, since it uses less digits than its factorization.

101691994960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31003711 (or 31003705 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 55.

The spelling of 101691994960 in words is "one hundred one billion, six hundred ninety-one million, nine hundred ninety-four thousand, nine hundred sixty".