20516255236612 has 48 divisors (see below), whose sum is σ = 38677633892352. Its totient is φ = 9494463543840.

The previous prime is 20516255236583. The next prime is 20516255236613. The reversal of 20516255236612 is 21663255261502.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (20516255236613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23595373 + ... + 24449419.

It is an arithmetic number, because the mean of its divisors is an integer number (805784039424).

Almost surely, 2^{20516255236612} is an apocalyptic number.

It is an amenable number.

20516255236612 is a deficient number, since it is larger than the sum of its proper divisors (18161378655740).

20516255236612 is a wasteful number, since it uses less digits than its factorization.

20516255236612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862528 (or 862526 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 20516255236612 in words is "twenty trillion, five hundred sixteen billion, two hundred fifty-five million, two hundred thirty-six thousand, six hundred twelve".