20520495820748 has 96 divisors (see below), whose sum is σ = 45834670361088. Its totient is φ = 7807402944000.

The previous prime is 20520495820733. The next prime is 20520495820757. The reversal of 20520495820748 is 84702859402502.

It is a super-2 number, since 2×20520495820748² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20520495820693 and 20520495820702.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2247290 + ... + 6789057.

It is an arithmetic number, because the mean of its divisors is an integer number (477444482928).

Almost surely, 2^{20520495820748} is an apocalyptic number.

20520495820748 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20520495820748 is an abundant number, since it is smaller than the sum of its proper divisors (25314174540340).

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

20520495820748 is a wasteful number, since it uses less digits than its factorization.

20520495820748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9036543 (or 9036541 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 56.

The spelling of 20520495820748 in words is "twenty trillion, five hundred twenty billion, four hundred ninety-five million, eight hundred twenty thousand, seven hundred forty-eight".