136904251768 has 16 divisors (see below), whose sum is σ = 257797172880. Its totient is φ = 68158339008.

The previous prime is 136904251753. The next prime is 136904251769. The reversal of 136904251768 is 867152409631.

It is a super-2 number, since 2×136904251768² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136904251769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36721380 + ... + 36725107.

It is an arithmetic number, because the mean of its divisors is an integer number (16112323305).

It is a 1-persistent number, because it is pandigital, but 2⋅136904251768 = 273808503536 is not.

Almost surely, 2^136904251768 is an apocalyptic number.

It is an amenable number.

136904251768 is a deficient number, since it is larger than the sum of its proper divisors (120892921112).

136904251768 is a wasteful number, since it uses less digits than its factorization.

136904251768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73446726 (or 73446722 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 136904251768 in words is "one hundred thirty-six billion, nine hundred four million, two hundred fifty-one thousand, seven hundred sixty-eight".