20456085174357 has 16 divisors (see below), whose sum is σ = 31176813307392. Its totient is φ = 11687078066160.

The previous prime is 20456085174353. The next prime is 20456085174401. The reversal of 20456085174357 is 75347158065402.

It is a happy number.

It is not a de Polignac number, because 20456085174357 - 2² = 20456085174353 is a prime.

It is a super-4 number, since 4×20456085174357⁴ (a number of 54 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20456085174297 and 20456085174306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20456085174353) 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, 87942003 + ... + 88174304.

It is an arithmetic number, because the mean of its divisors is an integer number (1948550831712).

Almost surely, 2^{20456085174357} is an apocalyptic number.

It is an amenable number.

20456085174357 is a deficient number, since it is larger than the sum of its proper divisors (10720728133035).

20456085174357 is a wasteful number, since it uses less digits than its factorization.

20456085174357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176121848.

The product of its (nonzero) digits is 28224000, while the sum is 57.

The spelling of 20456085174357 in words is "twenty trillion, four hundred fifty-six billion, eighty-five million, one hundred seventy-four thousand, three hundred fifty-seven".