77380191533736 has 128 divisors (see below), whose sum is σ = 264547663430400. Its totient is φ = 20407962597120.

The previous prime is 77380191533657. The next prime is 77380191533737. The reversal of 77380191533736 is 63733519108377.

It is a happy number.

77380191533736 is a `hidden beast` number, since 7 + 7 + 3 + 8 + 0 + 1 + 91 + 533 + 7 + 3 + 6 = 666.

It is a super-2 number, since 2×77380191533736² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (77380191533737) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1968340935 + ... + 1968380246.

It is an arithmetic number, because the mean of its divisors is an integer number (2066778620550).

Almost surely, 2^{77380191533736} is an apocalyptic number.

It is an amenable number.

77380191533736 is an abundant number, since it is smaller than the sum of its proper divisors (187167471896664).

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

77380191533736 is a wasteful number, since it uses less digits than its factorization.

77380191533736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936721216 (or 3936721206 counting only the distinct ones).

The product of its (nonzero) digits is 60011280, while the sum is 63.

The spelling of 77380191533736 in words is "seventy-seven trillion, three hundred eighty billion, one hundred ninety-one million, five hundred thirty-three thousand, seven hundred thirty-six".