20118149572 has 6 divisors (see below), whose sum is σ = 35206761758. Its totient is φ = 10059074784.

The previous prime is 20118149539. The next prime is 20118149587. The reversal of 20118149572 is 27594181102.

It can be written as a sum of positive squares in only one way, i.e., 19414520896 + 703628676 = 139336^2 + 26526^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2514768693 + ... + 2514768700.

Almost surely, 2^20118149572 is an apocalyptic number.

It is an amenable number.

20118149572 is a deficient number, since it is larger than the sum of its proper divisors (15088612186).

20118149572 is a wasteful number, since it uses less digits than its factorization.

20118149572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5029537397 (or 5029537395 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 40.

The spelling of 20118149572 in words is "twenty billion, one hundred eighteen million, one hundred forty-nine thousand, five hundred seventy-two".