12126862377 has 16 divisors (see below), whose sum is σ = 20532254080. Its totient is φ = 6929635536.

The previous prime is 12126862367. The next prime is 12126862381. The reversal of 12126862377 is 77326862121.

12126862377 is a `hidden beast` number, since 1 + 2 + 12 + 6 + 8 + 623 + 7 + 7 = 666.

It is not a de Polignac number, because 12126862377 - 2⁴ = 12126862361 is a prime.

It is a super-2 number, since 2×12126862377² (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 (12126862337) 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, 32081458 + ... + 32081835.

It is an arithmetic number, because the mean of its divisors is an integer number (1283265880).

Almost surely, 2^12126862377 is an apocalyptic number.

It is an amenable number.

12126862377 is a deficient number, since it is larger than the sum of its proper divisors (8405391703).

12126862377 is an equidigital number, since it uses as much as digits as its factorization.

12126862377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64163309 (or 64163303 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

It can be divided in two parts, 12126 and 862377, that added together give a triangular number (874503 = T₁₃₂₂).

The spelling of 12126862377 in words is "twelve billion, one hundred twenty-six million, eight hundred sixty-two thousand, three hundred seventy-seven".