77670076770 has 128 divisors (see below), whose sum is σ = 243330151680. Its totient is φ = 17380707840.

The previous prime is 77670076747. The next prime is 77670076793. The reversal of 77670076770 is 7767007677.

It is an interprime number because it is at equal distance from previous prime (77670076747) and next prime (77670076793).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 967219 + ... + 1044438.

It is an arithmetic number, because the mean of its divisors is an integer number (1901016810).

Almost surely, 2^77670076770 is an apocalyptic number.

77670076770 is an abundant number, since it is smaller than the sum of its proper divisors (165660074910).

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

77670076770 is a wasteful number, since it uses less digits than its factorization.

77670076770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011697 (or 2011691 counting only the distinct ones).

The product of its (nonzero) digits is 4235364, while the sum is 54.

It can be divided in two parts, 7767007 and 6770, that added together give a palindrome (7773777).

The spelling of 77670076770 in words is "seventy-seven billion, six hundred seventy million, seventy-six thousand, seven hundred seventy".