20396042634 has 32 divisors (see below), whose sum is σ = 44677785600. Its totient is φ = 6155990000.

The previous prime is 20396042627. The next prime is 20396042669. The reversal of 20396042634 is 43624069302.

It is a junction number, because it is equal to n+sod(n) for n = 20396042592 and 20396042601.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 599034 + ... + 632165.

It is an arithmetic number, because the mean of its divisors is an integer number (1396180800).

Almost surely, 2^20396042634 is an apocalyptic number.

20396042634 is an abundant number, since it is smaller than the sum of its proper divisors (24281742966).

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

20396042634 is a wasteful number, since it uses less digits than its factorization.

20396042634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231466.

The product of its (nonzero) digits is 186624, while the sum is 39.

The spelling of 20396042634 in words is "twenty billion, three hundred ninety-six million, forty-two thousand, six hundred thirty-four".