12313777541 has 6 divisors (see below), whose sum is σ = 13333853970. Its totient is φ = 11366563728.

The previous prime is 12313777537. The next prime is 12313777547. The reversal of 12313777541 is 14577731321.

It can be written as a sum of positive squares in 3 ways, for example, as 19624900 + 12294152641 = 4430^2 + 110879^2 .

It is not a de Polignac number, because 12313777541 - 2² = 12313777537 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12313777547) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36431126 + ... + 36431463.

It is an arithmetic number, because the mean of its divisors is an integer number (2222308995).

Almost surely, 2^12313777541 is an apocalyptic number.

It is an amenable number.

12313777541 is a deficient number, since it is larger than the sum of its proper divisors (1020076429).

12313777541 is an equidigital number, since it uses as much as digits as its factorization.

12313777541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72862615 (or 72862602 counting only the distinct ones).

The product of its digits is 123480, while the sum is 41.

The spelling of 12313777541 in words is "twelve billion, three hundred thirteen million, seven hundred seventy-seven thousand, five hundred forty-one".