20355215030 has 48 divisors (see below), whose sum is σ = 38951005680. Its totient is φ = 7657317888.

The previous prime is 20355215029. The next prime is 20355215143. The reversal of 20355215030 is 3051255302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6740861 + ... + 6743879.

It is an arithmetic number, because the mean of its divisors is an integer number (811479285).

Almost surely, 2^20355215030 is an apocalyptic number.

20355215030 is a deficient number, since it is larger than the sum of its proper divisors (18595790650).

20355215030 is a wasteful number, since it uses less digits than its factorization.

20355215030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5393 (or 5376 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 26.

The spelling of 20355215030 in words is "twenty billion, three hundred fifty-five million, two hundred fifteen thousand, thirty".