20601615830 has 32 divisors (see below), whose sum is σ = 39042747360. Its totient is φ = 7805306880.

The previous prime is 20601615829. The next prime is 20601615857. The reversal of 20601615830 is 3851610602.

It is a happy number.

It is a Curzon number.

It is a congruent number.

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, 1317860 + ... + 1333400.

It is an arithmetic number, because the mean of its divisors is an integer number (1220085855).

Almost surely, 2^20601615830 is an apocalyptic number.

20601615830 is a deficient number, since it is larger than the sum of its proper divisors (18441131530).

20601615830 is a wasteful number, since it uses less digits than its factorization.

20601615830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22544.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 20601615830 in words is "twenty billion, six hundred one million, six hundred fifteen thousand, eight hundred thirty".