20351655501131 has 8 divisors (see below), whose sum is σ = 20848110063984. Its totient is φ = 19855204401280.

The previous prime is 20351655501061. The next prime is 20351655501217. The reversal of 20351655501131 is 13110555615302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-20351655501131 is a prime.

It is a super-2 number, since 2×20351655501131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20351655501631) 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, 14183540 + ... + 15552366.

It is an arithmetic number, because the mean of its divisors is an integer number (2606013757998).

Almost surely, 2^{20351655501131} is an apocalyptic number.

20351655501131 is a deficient number, since it is larger than the sum of its proper divisors (496454562853).

20351655501131 is a wasteful number, since it uses less digits than its factorization.

20351655501131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731501.

The product of its (nonzero) digits is 67500, while the sum is 38.

The spelling of 20351655501131 in words is "twenty trillion, three hundred fifty-one billion, six hundred fifty-five million, five hundred one thousand, one hundred thirty-one".