20456085175456 has 48 divisors (see below), whose sum is σ = 48733614691776. Its totient is φ = 8251194018816.

The previous prime is 20456085175453. The next prime is 20456085175543. The reversal of 20456085175456 is 65457158065402.

It is a self number, because there is not a number n which added to its sum of digits gives 20456085175456.

It is not an unprimeable number, because it can be changed into a prime (20456085175453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2685931746 + ... + 2685939361.

It is an arithmetic number, because the mean of its divisors is an integer number (1015283639412).

Almost surely, 2^{20456085175456} is an apocalyptic number.

It is an amenable number.

20456085175456 is an abundant number, since it is smaller than the sum of its proper divisors (28277529516320).

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

20456085175456 is a wasteful number, since it uses less digits than its factorization.

20456085175456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5371871141 (or 5371871133 counting only the distinct ones).

The product of its (nonzero) digits is 40320000, while the sum is 58.

The spelling of 20456085175456 in words is "twenty trillion, four hundred fifty-six billion, eighty-five million, one hundred seventy-five thousand, four hundred fifty-six".