77705605360153 has 4 divisors (see below), whose sum is σ = 77808254773540. Its totient is φ = 77602955946768.

The previous prime is 77705605360139. The next prime is 77705605360169. The reversal of 77705605360153 is 35106350650777.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 59881782142224 + 17823823217929 = 7738332^2 + 4221827^2 .

It is a cyclic number.

It is not a de Polignac number, because 77705605360153 - 2²⁵ = 77705571805721 is a prime.

It is a super-2 number, since 2×77705605360153² (a number of 29 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 = 77705605360094 and 77705605360103.

It is not an unprimeable number, because it can be changed into a prime (77705605360183) 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, 51324705558 + ... + 51324707071.

It is an arithmetic number, because the mean of its divisors is an integer number (19452063693385).

Almost surely, 2^{77705605360153} is an apocalyptic number.

It is an amenable number.

77705605360153 is a deficient number, since it is larger than the sum of its proper divisors (102649413387).

77705605360153 is a wasteful number, since it uses less digits than its factorization.

77705605360153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102649413386.

The product of its (nonzero) digits is 13891500, while the sum is 55.

The spelling of 77705605360153 in words is "seventy-seven trillion, seven hundred five billion, six hundred five million, three hundred sixty thousand, one hundred fifty-three".