77434414147 has 4 divisors (see below), whose sum is σ = 79235214520. Its totient is φ = 75633613776.

The previous prime is 77434414097. The next prime is 77434414151. The reversal of 77434414147 is 74141443477.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77434414147 - 2²³ = 77426025539 is a prime.

It is a super-2 number, since 2×77434414147² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77434414097 and 77434414106.

It is not an unprimeable number, because it can be changed into a prime (77434444147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 900400122 + ... + 900400207.

It is an arithmetic number, because the mean of its divisors is an integer number (19808803630).

Almost surely, 2^77434414147 is an apocalyptic number.

77434414147 is a deficient number, since it is larger than the sum of its proper divisors (1800800373).

77434414147 is a wasteful number, since it uses less digits than its factorization.

77434414147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800800372.

The product of its digits is 1053696, while the sum is 46.

The spelling of 77434414147 in words is "seventy-seven billion, four hundred thirty-four million, four hundred fourteen thousand, one hundred forty-seven".