77434806358 has 32 divisors (see below), whose sum is σ = 142979893056. Its totient is φ = 30628551168.

The previous prime is 77434806347. The next prime is 77434806359. The reversal of 77434806358 is 85360843477.

It is a super-2 number, since 2×77434806358² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77434806299 and 77434806308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77434806359) 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, 1205010 + ... + 1267642.

It is an arithmetic number, because the mean of its divisors is an integer number (4468121658).

Almost surely, 2^77434806358 is an apocalyptic number.

77434806358 is a deficient number, since it is larger than the sum of its proper divisors (65545086698).

77434806358 is a wasteful number, since it uses less digits than its factorization.

77434806358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69448.

The product of its (nonzero) digits is 13547520, while the sum is 55.

The spelling of 77434806358 in words is "seventy-seven billion, four hundred thirty-four million, eight hundred six thousand, three hundred fifty-eight".