77045716377047 has 4 divisors (see below), whose sum is σ = 84049872411336. Its totient is φ = 70041560342760.

The previous prime is 77045716377037. The next prime is 77045716377053. The reversal of 77045716377047 is 74077361754077.

It is a happy number.

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 77045716377047 - 2¹⁰ = 77045716376023 is a prime.

It is a super-5 number, since 5×77045716377047⁵ (a number of 71 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77045716377037) 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, 3502078017128 + ... + 3502078017149.

It is an arithmetic number, because the mean of its divisors is an integer number (21012468102834).

Almost surely, 2^{77045716377047} is an apocalyptic number.

77045716377047 is a deficient number, since it is larger than the sum of its proper divisors (7004156034289).

77045716377047 is a wasteful number, since it uses less digits than its factorization.

77045716377047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7004156034288.

The product of its (nonzero) digits is 169414560, while the sum is 65.

The spelling of 77045716377047 in words is "seventy-seven trillion, forty-five billion, seven hundred sixteen million, three hundred seventy-seven thousand, forty-seven".