77280513734 has 16 divisors (see below), whose sum is σ = 116729208000. Its totient is φ = 38370913344.

The previous prime is 77280513697. The next prime is 77280513767. The reversal of 77280513734 is 43731508277.

It is a congruent number.

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, 1183754 + ... + 1247330.

It is an arithmetic number, because the mean of its divisors is an integer number (7295575500).

Almost surely, 2^77280513734 is an apocalyptic number.

77280513734 is a deficient number, since it is larger than the sum of its proper divisors (39448694266).

77280513734 is a wasteful number, since it uses less digits than its factorization.

77280513734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67807.

The product of its (nonzero) digits is 987840, while the sum is 47.

The spelling of 77280513734 in words is "seventy-seven billion, two hundred eighty million, five hundred thirteen thousand, seven hundred thirty-four".