76780434434 has 32 divisors (see below), whose sum is σ = 131125008384. Its totient is φ = 33377283280.

The previous prime is 76780434427. The next prime is 76780434439. The reversal of 76780434434 is 43443408767.

It is a happy number.

It is a super-2 number, since 2×76780434434² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (76780434439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5165417 + ... + 5180259.

It is an arithmetic number, because the mean of its divisors is an integer number (4097656512).

Almost surely, 2^76780434434 is an apocalyptic number.

76780434434 is a deficient number, since it is larger than the sum of its proper divisors (54344573950).

76780434434 is a wasteful number, since it uses less digits than its factorization.

76780434434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25102.

The product of its (nonzero) digits is 5419008, while the sum is 50.

The spelling of 76780434434 in words is "seventy-six billion, seven hundred eighty million, four hundred thirty-four thousand, four hundred thirty-four".