202581891088 has 40 divisors (see below), whose sum is σ = 403049819480. Its totient is φ = 98603274240.

The previous prime is 202581891073. The next prime is 202581891097. The reversal of 202581891088 is 880198185202.

It can be written as a sum of positive squares in 4 ways, for example, as 272646144 + 202309244944 = 16512^2 + 449788^2 .

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, 975243 + ... + 1164586.

It is an arithmetic number, because the mean of its divisors is an integer number (10076245487).

Almost surely, 2^202581891088 is an apocalyptic number.

It is an amenable number.

202581891088 is a deficient number, since it is larger than the sum of its proper divisors (200467928392).

202581891088 is a wasteful number, since it uses less digits than its factorization.

202581891088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139995 (or 2139989 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 52.

The spelling of 202581891088 in words is "two hundred two billion, five hundred eighty-one million, eight hundred ninety-one thousand, eighty-eight".