20315522042 has 16 divisors (see below), whose sum is σ = 30642603264. Its totient is φ = 10101474000.

The previous prime is 20315522021. The next prime is 20315522069. The reversal of 20315522042 is 24022551302.

It is a super-3 number, since 3×20315522042³ (a number of 32 digits) contains 333 as substring.

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, 230192 + ... + 305972.

It is an arithmetic number, because the mean of its divisors is an integer number (1915162704).

Almost surely, 2^20315522042 is an apocalyptic number.

20315522042 is a deficient number, since it is larger than the sum of its proper divisors (10327081222).

20315522042 is a wasteful number, since it uses less digits than its factorization.

20315522042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76525.

The product of its (nonzero) digits is 4800, while the sum is 26.

The spelling of 20315522042 in words is "twenty billion, three hundred fifteen million, five hundred twenty-two thousand, forty-two".