77760800078280 has 64 divisors (see below), whose sum is σ = 254489891169600. Its totient is φ = 18851103048960.

The previous prime is 77760800078263. The next prime is 77760800078341. The reversal of 77760800078280 is 8287000806777.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29454847195 + ... + 29454849834.

It is an arithmetic number, because the mean of its divisors is an integer number (3976404549525).

Almost surely, 2^{77760800078280} is an apocalyptic number.

It is an amenable number.

77760800078280 is an abundant number, since it is smaller than the sum of its proper divisors (176729091091320).

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

77760800078280 is a wasteful number, since it uses less digits than its factorization.

77760800078280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58909697054 (or 58909697050 counting only the distinct ones).

The product of its (nonzero) digits is 14751744, while the sum is 60.

The spelling of 77760800078280 in words is "seventy-seven trillion, seven hundred sixty billion, eight hundred million, seventy-eight thousand, two hundred eighty".