136928641731 has 16 divisors (see below), whose sum is σ = 213505569024. Its totient is φ = 76425287904.

The previous prime is 136928641727. The next prime is 136928641763. The reversal of 136928641731 is 137146829631.

It is not a de Polignac number, because 136928641731 - 2² = 136928641727 is a prime.

It is a super-2 number, since 2×136928641731² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136928641631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75817836 + ... + 75819641.

It is an arithmetic number, because the mean of its divisors is an integer number (13344098064).

Almost surely, 2^136928641731 is an apocalyptic number.

136928641731 is a deficient number, since it is larger than the sum of its proper divisors (76576927293).

136928641731 is a wasteful number, since it uses less digits than its factorization.

136928641731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151637530.

The product of its digits is 1306368, while the sum is 51.

The spelling of 136928641731 in words is "one hundred thirty-six billion, nine hundred twenty-eight million, six hundred forty-one thousand, seven hundred thirty-one".