201150988578 has 56 divisors (see below), whose sum is σ = 452459936988. Its totient is φ = 67038894432.

The previous prime is 201150988523. The next prime is 201150988583. The reversal of 201150988578 is 875889051102.

201150988578 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 509 + 88 + 57 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 198494307729 + 2656680849 = 445527^2 + 51543^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 16167376 + ... + 16179812.

Almost surely, 2^201150988578 is an apocalyptic number.

201150988578 is an abundant number, since it is smaller than the sum of its proper divisors (251308948410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201150988578 is a wasteful number, since it uses less digits than its factorization.

201150988578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23550 (or 23535 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 54.

The spelling of 201150988578 in words is "two hundred one billion, one hundred fifty million, nine hundred eighty-eight thousand, five hundred seventy-eight".