77141260720 has 40 divisors (see below), whose sum is σ = 179371983744. Its totient is φ = 30853312512.

The previous prime is 77141260709. The next prime is 77141260733. The reversal of 77141260720 is 2706214177.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 77141260720.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 823312 + ... + 912208.

Almost surely, 2^77141260720 is an apocalyptic number.

It is an amenable number.

77141260720 is an abundant number, since it is smaller than the sum of its proper divisors (102230723024).

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

77141260720 is a wasteful number, since it uses less digits than its factorization.

77141260720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99757 (or 99751 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 37.

Adding to 77141260720 its reverse (2706214177), we get a palindrome (79847474897).

The spelling of 77141260720 in words is "seventy-seven billion, one hundred forty-one million, two hundred sixty thousand, seven hundred twenty".