77741540856072 has 48 divisors (see below), whose sum is σ = 210550711098780. Its totient is φ = 25913760230400.

The previous prime is 77741540856059. The next prime is 77741540856149. The reversal of 77741540856072 is 27065804514777.

It is a happy number.

77741540856072 is a `hidden beast` number, since 7 + 7 + 7 + 4 + 1 + 540 + 85 + 6 + 0 + 7 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 76524459726276 + 1217081129796 = 8747826^2 + 1103214^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22025572 + ... + 25310252.

Almost surely, 2^{77741540856072} is an apocalyptic number.

77741540856072 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

77741540856072 is an abundant number, since it is smaller than the sum of its proper divisors (132809170242708).

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

77741540856072 is a wasteful number, since it uses less digits than its factorization.

77741540856072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3613414 (or 3613407 counting only the distinct ones).

The product of its (nonzero) digits is 92198400, while the sum is 63.

The spelling of 77741540856072 in words is "seventy-seven trillion, seven hundred forty-one billion, five hundred forty million, eight hundred fifty-six thousand, seventy-two".