53777156431 has 4 divisors (see below), whose sum is σ = 56940518592. Its totient is φ = 50613794272.

The previous prime is 53777156417. The next prime is 53777156441. The reversal of 53777156431 is 13465177735.

53777156431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 53777156431 - 2¹¹ = 53777154383 is a prime.

It is a super-2 number, since 2×53777156431² (a number of 22 digits) contains 22 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 (53777156441) 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, 1581681055 + ... + 1581681088.

It is an arithmetic number, because the mean of its divisors is an integer number (14235129648).

Almost surely, 2^53777156431 is an apocalyptic number.

53777156431 is a deficient number, since it is larger than the sum of its proper divisors (3163362161).

53777156431 is a wasteful number, since it uses less digits than its factorization.

53777156431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3163362160.

The product of its digits is 1852200, while the sum is 49.

The spelling of 53777156431 in words is "fifty-three billion, seven hundred seventy-seven million, one hundred fifty-six thousand, four hundred thirty-one".