19860112992 has 48 divisors (see below), whose sum is σ = 52452671040. Its totient is φ = 6579418752.

The previous prime is 19860112969. The next prime is 19860113011. The reversal of 19860112992 is 29921106891.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 618942 + ... + 650237.

It is an arithmetic number, because the mean of its divisors is an integer number (1092763980).

Almost surely, 2^19860112992 is an apocalyptic number.

19860112992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19860112992 is an abundant number, since it is smaller than the sum of its proper divisors (32592558048).

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

19860112992 is a wasteful number, since it uses less digits than its factorization.

19860112992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269355 (or 1269347 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 48.

The spelling of 19860112992 in words is "nineteen billion, eight hundred sixty million, one hundred twelve thousand, nine hundred ninety-two".