20616971460 has 24 divisors (see below), whose sum is σ = 57727520256. Its totient is φ = 5497859040.

The previous prime is 20616971423. The next prime is 20616971461. The reversal of 20616971460 is 6417961602.

It is not an unprimeable number, because it can be changed into a prime (20616971461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171808036 + ... + 171808155.

It is an arithmetic number, because the mean of its divisors is an integer number (2405313344).

Almost surely, 2^20616971460 is an apocalyptic number.

20616971460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20616971460 is an abundant number, since it is smaller than the sum of its proper divisors (37110548796).

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

20616971460 is a wasteful number, since it uses less digits than its factorization.

20616971460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343616203 (or 343616201 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 20616971460 in words is "twenty billion, six hundred sixteen million, nine hundred seventy-one thousand, four hundred sixty".