20351504334 has 64 divisors (see below), whose sum is σ = 46892160000. Its totient is φ = 5768091648.

The previous prime is 20351504317. The next prime is 20351504339. The reversal of 20351504334 is 43340515302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20351504339) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2913454 + ... + 2920430.

It is an arithmetic number, because the mean of its divisors is an integer number (732690000).

Almost surely, 2^20351504334 is an apocalyptic number.

20351504334 is an abundant number, since it is smaller than the sum of its proper divisors (26540655666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20351504334 is a wasteful number, since it uses less digits than its factorization.

20351504334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7537.

The product of its (nonzero) digits is 21600, while the sum is 30.

The spelling of 20351504334 in words is "twenty billion, three hundred fifty-one million, five hundred four thousand, three hundred thirty-four".