136364570728 has 8 divisors (see below), whose sum is σ = 255683570130. Its totient is φ = 68182285360.

The previous prime is 136364570653. The next prime is 136364570731. The reversal of 136364570728 is 827075463631.

It can be written as a sum of positive squares in only one way, i.e., 88972151524 + 47392419204 = 298282^2 + 217698^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×136364570728² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8522785663 + ... + 8522785678.

Almost surely, 2^136364570728 is an apocalyptic number.

It is an amenable number.

136364570728 is a deficient number, since it is larger than the sum of its proper divisors (119318999402).

136364570728 is a wasteful number, since it uses less digits than its factorization.

136364570728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17045571347 (or 17045571343 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 52.

The spelling of 136364570728 in words is "one hundred thirty-six billion, three hundred sixty-four million, five hundred seventy thousand, seven hundred twenty-eight".