775116222840 has 48 divisors (see below), whose sum is σ = 2519127725400. Its totient is φ = 206697659328.

The previous prime is 775116222821. The next prime is 775116222847. The reversal of 775116222840 is 48222611577.

775116222840 is a `hidden beast` number, since 7 + 7 + 5 + 11 + 622 + 2 + 8 + 4 + 0 = 666.

775116222840 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775116222847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1076549950 + ... + 1076550669.

Almost surely, 2^775116222840 is an apocalyptic number.

It is an amenable number.

775116222840 is an abundant number, since it is smaller than the sum of its proper divisors (1744011502560).

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

775116222840 is a wasteful number, since it uses less digits than its factorization.

775116222840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153100636 (or 2153100629 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 775116222840 in words is "seven hundred seventy-five billion, one hundred sixteen million, two hundred twenty-two thousand, eight hundred forty".