136774077680 has 20 divisors (see below), whose sum is σ = 317999730792. Its totient is φ = 54709631040.

The previous prime is 136774077653. The next prime is 136774077683. The reversal of 136774077680 is 86770477631.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136774077683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 854837906 + ... + 854838065.

Almost surely, 2^136774077680 is an apocalyptic number.

136774077680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136774077680 is an abundant number, since it is smaller than the sum of its proper divisors (181225653112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136774077680 is a wasteful number, since it uses less digits than its factorization.

136774077680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709675984 (or 1709675978 counting only the distinct ones).

The product of its (nonzero) digits is 8297856, while the sum is 56.

The spelling of 136774077680 in words is "one hundred thirty-six billion, seven hundred seventy-four million, seventy-seven thousand, six hundred eighty".