77802762078120 has 128 divisors (see below), whose sum is σ = 240224172249600. Its totient is φ = 20150020210944.

The previous prime is 77802762078109. The next prime is 77802762078199. The reversal of 77802762078120 is 2187026720877.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65611702 + ... + 66786981.

It is an arithmetic number, because the mean of its divisors is an integer number (1876751345700).

Almost surely, 2^{77802762078120} is an apocalyptic number.

It is an amenable number.

77802762078120 is an abundant number, since it is smaller than the sum of its proper divisors (162421410171480).

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

77802762078120 is a wasteful number, since it uses less digits than its factorization.

77802762078120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132398839 (or 132398835 counting only the distinct ones).

The product of its (nonzero) digits is 7375872, while the sum is 57.

Adding to 77802762078120 its reverse (2187026720877), we get a palindrome (79989788798997).

The spelling of 77802762078120 in words is "seventy-seven trillion, eight hundred two billion, seven hundred sixty-two million, seventy-eight thousand, one hundred twenty".