19624978216 has 32 divisors (see below), whose sum is σ = 37678141440. Its totient is φ = 9578567488.

The previous prime is 19624978213. The next prime is 19624978253. The reversal of 19624978216 is 61287942691.

It is not an unprimeable number, because it can be changed into a prime (19624978213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75870 + ... + 212146.

It is an arithmetic number, because the mean of its divisors is an integer number (1177441920).

Almost surely, 2^19624978216 is an apocalyptic number.

It is an amenable number.

19624978216 is a deficient number, since it is larger than the sum of its proper divisors (18053163224).

19624978216 is a wasteful number, since it uses less digits than its factorization.

19624978216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136713 (or 136709 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 55.

The spelling of 19624978216 in words is "nineteen billion, six hundred twenty-four million, nine hundred seventy-eight thousand, two hundred sixteen".