10321920534 has 16 divisors (see below), whose sum is σ = 20652627888. Its totient is φ = 3439175712.

The previous prime is 10321920517. The next prime is 10321920577. The reversal of 10321920534 is 43502912301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350797 + ... + 379080.

It is an arithmetic number, because the mean of its divisors is an integer number (1290789243).

Almost surely, 2^10321920534 is an apocalyptic number.

10321920534 is an abundant number, since it is smaller than the sum of its proper divisors (10330707354).

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

10321920534 is a wasteful number, since it uses less digits than its factorization.

10321920534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732239.

The product of its (nonzero) digits is 6480, while the sum is 30.

It can be divided in two parts, 103219 and 20534, that added together give a triangular number (123753 = T₄₉₇).

The spelling of 10321920534 in words is "ten billion, three hundred twenty-one million, nine hundred twenty thousand, five hundred thirty-four".