19860761312 has 24 divisors (see below), whose sum is σ = 44686713456. Its totient is φ = 8511754752.

The previous prime is 19860761299. The next prime is 19860761317. The reversal of 19860761312 is 21316706891.

It is a super-2 number, since 2×19860761312² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19860761317) 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, 44331833 + ... + 44332280.

It is an arithmetic number, because the mean of its divisors is an integer number (1861946394).

Almost surely, 2^19860761312 is an apocalyptic number.

It is an amenable number.

19860761312 is an abundant number, since it is smaller than the sum of its proper divisors (24825952144).

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

19860761312 is an equidigital number, since it uses as much as digits as its factorization.

19860761312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88664130 (or 88664122 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 19860761312 in words is "nineteen billion, eight hundred sixty million, seven hundred sixty-one thousand, three hundred twelve".