20352152146631 has 4 divisors (see below), whose sum is σ = 20352161259312. Its totient is φ = 20352143033952.

The previous prime is 20352152146621. The next prime is 20352152146637. The reversal of 20352152146631 is 13664125125302.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20352152146631 is a prime.

It is a super-2 number, since 2×20352152146631² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20352152146637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1319951 + ... + 6515103.

It is an arithmetic number, because the mean of its divisors is an integer number (5088040314828).

Almost surely, 2^{20352152146631} is an apocalyptic number.

20352152146631 is a deficient number, since it is larger than the sum of its proper divisors (9112681).

20352152146631 is an equidigital number, since it uses as much as digits as its factorization.

20352152146631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9112680.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 20352152146631 in words is "twenty trillion, three hundred fifty-two billion, one hundred fifty-two million, one hundred forty-six thousand, six hundred thirty-one".