20351631532402 has 8 divisors (see below), whose sum is σ = 30870452324700. Its totient is φ = 10061480757504.

The previous prime is 20351631532387. The next prime is 20351631532409. The reversal of 20351631532402 is 20423513615302.

It can be written as a sum of positive squares in 2 ways, for example, as 18525784697281 + 1825846835121 = 4304159^2 + 1351239^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20351631532409) 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, 57167504127 + ... + 57167504482.

Almost surely, 2^{20351631532402} is an apocalyptic number.

20351631532402 is a deficient number, since it is larger than the sum of its proper divisors (10518820792298).

20351631532402 is a wasteful number, since it uses less digits than its factorization.

20351631532402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114335008700.

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 20351631532402 in words is "twenty trillion, three hundred fifty-one billion, six hundred thirty-one million, five hundred thirty-two thousand, four hundred two".