77306718890 has 8 divisors (see below), whose sum is σ = 139152094020. Its totient is φ = 30922687552.

The previous prime is 77306718821. The next prime is 77306718943. The reversal of 77306718890 is 9881760377.

It can be written as a sum of positive squares in 2 ways, for example, as 75329938369 + 1976780521 = 274463^2 + 44461^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3865335935 + ... + 3865335954.

Almost surely, 2^77306718890 is an apocalyptic number.

77306718890 is a deficient number, since it is larger than the sum of its proper divisors (61845375130).

77306718890 is a wasteful number, since it uses less digits than its factorization.

77306718890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7730671896.

The product of its (nonzero) digits is 3556224, while the sum is 56.

The spelling of 77306718890 in words is "seventy-seven billion, three hundred six million, seven hundred eighteen thousand, eight hundred ninety".