19427637216 has 96 divisors (see below), whose sum is σ = 55820989728. Its totient is φ = 5879715840.

The previous prime is 19427637139. The next prime is 19427637239. The reversal of 19427637216 is 61273672491.

It is a tau number, because it is divible by the number of its divisors (96).

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 15 ways as a sum of consecutive naturals, for example, 51471 + ... + 203726.

It is an arithmetic number, because the mean of its divisors is an integer number (581468643).

Almost surely, 2^19427637216 is an apocalyptic number.

19427637216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19427637216 is an abundant number, since it is smaller than the sum of its proper divisors (36393352512).

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

19427637216 is a wasteful number, since it uses less digits than its factorization.

19427637216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255284 (or 255276 counting only the distinct ones).

The product of its digits is 762048, while the sum is 48.

The spelling of 19427637216 in words is "nineteen billion, four hundred twenty-seven million, six hundred thirty-seven thousand, two hundred sixteen".