20674465500 has 96 divisors (see below), whose sum is σ = 64835184960. Its totient is φ = 5089094400.

The previous prime is 20674465439. The next prime is 20674465507. The reversal of 20674465500 is 556447602.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20674465507) 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 31 ways as a sum of consecutive naturals, for example, 510615 + ... + 549614.

It is an arithmetic number, because the mean of its divisors is an integer number (675366510).

Almost surely, 2^20674465500 is an apocalyptic number.

20674465500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20674465500 is an abundant number, since it is smaller than the sum of its proper divisors (44160719460).

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

20674465500 is a wasteful number, since it uses less digits than its factorization.

20674465500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060264 (or 1060252 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 39.

The spelling of 20674465500 in words is "twenty billion, six hundred seventy-four million, four hundred sixty-five thousand, five hundred".