77144140445652 has 144 divisors (see below), whose sum is σ = 236728927227520. Its totient is φ = 21281142016512.

The previous prime is 77144140445641. The next prime is 77144140445689. The reversal of 77144140445652 is 25654404144177.

77144140445652 is a `hidden beast` number, since 7 + 7 + 1 + 4 + 4 + 140 + 445 + 6 + 52 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60031573 + ... + 61303164.

Almost surely, 2^{77144140445652} is an apocalyptic number.

It is an amenable number.

77144140445652 is an abundant number, since it is smaller than the sum of its proper divisors (159584786781868).

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

77144140445652 is a wasteful number, since it uses less digits than its factorization.

77144140445652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121334815 (or 121334778 counting only the distinct ones).

The product of its (nonzero) digits is 15052800, while the sum is 54.

The spelling of 77144140445652 in words is "seventy-seven trillion, one hundred forty-four billion, one hundred forty million, four hundred forty-five thousand, six hundred fifty-two".