136866722788 has 24 divisors (see below), whose sum is σ = 244055270592. Its totient is φ = 67136850144.

The previous prime is 136866722761. The next prime is 136866722803. The reversal of 136866722788 is 887227668631.

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, 4820931 + ... + 4849237.

It is an arithmetic number, because the mean of its divisors is an integer number (10168969608).

Almost surely, 2^136866722788 is an apocalyptic number.

It is an amenable number.

136866722788 is a deficient number, since it is larger than the sum of its proper divisors (107188547804).

136866722788 is a wasteful number, since it uses less digits than its factorization.

136866722788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51171 (or 51169 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 64.

The spelling of 136866722788 in words is "one hundred thirty-six billion, eight hundred sixty-six million, seven hundred twenty-two thousand, seven hundred eighty-eight".