20515676265220 has 24 divisors (see below), whose sum is σ = 43083005765184. Its totient is φ = 8206254199776.

The previous prime is 20515676265193. The next prime is 20515676265251. The reversal of 20515676265220 is 2256267651502.

It is a super-2 number, since 2×20515676265220² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17547439 + ... + 18680041.

It is an arithmetic number, because the mean of its divisors is an integer number (1795125240216).

Almost surely, 2^{20515676265220} is an apocalyptic number.

20515676265220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20515676265220 is an abundant number, since it is smaller than the sum of its proper divisors (22567329499964).

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

20515676265220 is a wasteful number, since it uses less digits than its factorization.

20515676265220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038299 (or 2038297 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 49.

The spelling of 20515676265220 in words is "twenty trillion, five hundred fifteen billion, six hundred seventy-six million, two hundred sixty-five thousand, two hundred twenty".