20502540034 has 16 divisors (see below), whose sum is σ = 31350447360. Its totient is φ = 10052593200.

The previous prime is 20502539987. The next prime is 20502540043. The reversal of 20502540034 is 43004520502.

It is a junction number, because it is equal to n+sod(n) for n = 20502539990 and 20502540008.

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, 157237 + ... + 256375.

It is an arithmetic number, because the mean of its divisors is an integer number (1959402960).

Almost surely, 2^20502540034 is an apocalyptic number.

20502540034 is a deficient number, since it is larger than the sum of its proper divisors (10847907326).

20502540034 is a wasteful number, since it uses less digits than its factorization.

20502540034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101145.

The product of its (nonzero) digits is 4800, while the sum is 25.

The spelling of 20502540034 in words is "twenty billion, five hundred two million, five hundred forty thousand, thirty-four".