20692251468 has 48 divisors (see below), whose sum is σ = 61310376960. Its totient is φ = 5912071632.

The previous prime is 20692251413. The next prime is 20692251469. The reversal of 20692251468 is 86415229602.

It is not an unprimeable number, because it can be changed into a prime (20692251469) 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 15 ways as a sum of consecutive naturals, for example, 13684596 + ... + 13686107.

It is an arithmetic number, because the mean of its divisors is an integer number (1277299520).

Almost surely, 2^20692251468 is an apocalyptic number.

20692251468 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20692251468 is an abundant number, since it is smaller than the sum of its proper divisors (40618125492).

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

20692251468 is a wasteful number, since it uses less digits than its factorization.

20692251468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27370723 (or 27370715 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 20692251468 in words is "twenty billion, six hundred ninety-two million, two hundred fifty-one thousand, four hundred sixty-eight".