136131787705 has 32 divisors (see below), whose sum is σ = 171107209728. Its totient is φ = 103864320000.

The previous prime is 136131787699. The next prime is 136131787751. The reversal of 136131787705 is 507787131631.

It is a happy number.

It is not a de Polignac number, because 136131787705 - 2³ = 136131787697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8499705 + ... + 8515705.

It is an arithmetic number, because the mean of its divisors is an integer number (5347100304).

Almost surely, 2^136131787705 is an apocalyptic number.

It is an amenable number.

136131787705 is a deficient number, since it is larger than the sum of its proper divisors (34975422023).

136131787705 is a wasteful number, since it uses less digits than its factorization.

136131787705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16977.

The product of its (nonzero) digits is 740880, while the sum is 49.

The spelling of 136131787705 in words is "one hundred thirty-six billion, one hundred thirty-one million, seven hundred eighty-seven thousand, seven hundred five".