20631551350 has 24 divisors (see below), whose sum is σ = 38401267608. Its totient is φ = 8246904000.

The previous prime is 20631551293. The next prime is 20631551387. The reversal of 20631551350 is 5315513602.

20631551350 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×20631551350² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69639 + ... + 214738.

It is an arithmetic number, because the mean of its divisors is an integer number (1600052817).

Almost surely, 2^20631551350 is an apocalyptic number.

20631551350 is a deficient number, since it is larger than the sum of its proper divisors (17769716258).

20631551350 is a wasteful number, since it uses less digits than its factorization.

20631551350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285840 (or 285835 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 31.

The spelling of 20631551350 in words is "twenty billion, six hundred thirty-one million, five hundred fifty-one thousand, three hundred fifty".