20547204756 has 48 divisors (see below), whose sum is σ = 51743134464. Its totient is φ = 6308539776.

The previous prime is 20547204707. The next prime is 20547204761. The reversal of 20547204756 is 65740274502.

It is a congruent number.

It is an unprimeable number.

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, 70011 + ... + 214466.

It is an arithmetic number, because the mean of its divisors is an integer number (1077981968).

Almost surely, 2^20547204756 is an apocalyptic number.

20547204756 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20547204756 is an abundant number, since it is smaller than the sum of its proper divisors (31195929708).

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

20547204756 is a wasteful number, since it uses less digits than its factorization.

20547204756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284960 (or 284958 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 42.

The spelling of 20547204756 in words is "twenty billion, five hundred forty-seven million, two hundred four thousand, seven hundred fifty-six".