20616971432 has 16 divisors (see below), whose sum is σ = 39018101760. Its totient is φ = 10212144304.

The previous prime is 20616971423. The next prime is 20616971461. The reversal of 20616971432 is 23417961602.

It is a super-2 number, since 2×20616971432² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20616971432.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12041768 + ... + 12043479.

It is an arithmetic number, because the mean of its divisors is an integer number (2438631360).

Almost surely, 2^20616971432 is an apocalyptic number.

It is an amenable number.

20616971432 is a deficient number, since it is larger than the sum of its proper divisors (18401130328).

20616971432 is a wasteful number, since it uses less digits than its factorization.

20616971432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24085360 (or 24085356 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The spelling of 20616971432 in words is "twenty billion, six hundred sixteen million, nine hundred seventy-one thousand, four hundred thirty-two".