12542177377 has 16 divisors (see below), whose sum is σ = 13247027712. Its totient is φ = 11859212160.

The previous prime is 12542177371. The next prime is 12542177387. The reversal of 12542177377 is 77377124521.

It is a cyclic number.

It is not a de Polignac number, because 12542177377 - 2³ = 12542177369 is a prime.

It is a super-2 number, since 2×12542177377² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12542177371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216243 + ... + 268039.

It is an arithmetic number, because the mean of its divisors is an integer number (827939232).

Almost surely, 2^12542177377 is an apocalyptic number.

It is an amenable number.

12542177377 is a deficient number, since it is larger than the sum of its proper divisors (704850335).

12542177377 is a wasteful number, since it uses less digits than its factorization.

12542177377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52008.

The product of its digits is 576240, while the sum is 46.

The spelling of 12542177377 in words is "twelve billion, five hundred forty-two million, one hundred seventy-seven thousand, three hundred seventy-seven".