20344512644610 has 64 divisors (see below), whose sum is σ = 60875009270784. Its totient is φ = 4227431198400.

The previous prime is 20344512644569. The next prime is 20344512644629. The reversal of 20344512644610 is 1644621544302.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 4403571856 + ... + 4403576475.

It is an arithmetic number, because the mean of its divisors is an integer number (951172019856).

Almost surely, 2^{20344512644610} is an apocalyptic number.

20344512644610 is an abundant number, since it is smaller than the sum of its proper divisors (40530496626174).

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

20344512644610 is a wasteful number, since it uses less digits than its factorization.

20344512644610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8807148359.

The product of its (nonzero) digits is 552960, while the sum is 42.

The spelling of 20344512644610 in words is "twenty trillion, three hundred forty-four billion, five hundred twelve million, six hundred forty-four thousand, six hundred ten".