126263763873 has 32 divisors (see below), whose sum is σ = 204206042880. Its totient is φ = 76636368000.

The previous prime is 126263763799. The next prime is 126263763889. The reversal of 126263763873 is 378367362621.

126263763873 is a `hidden beast` number, since 1 + 2 + 626 + 3 + 7 + 6 + 3 + 8 + 7 + 3 = 666.

It is not a de Polignac number, because 126263763873 - 2⁹ = 126263763361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126263763673) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2438253 + ... + 2489498.

It is an arithmetic number, because the mean of its divisors is an integer number (6381438840).

Almost surely, 2^126263763873 is an apocalyptic number.

126263763873 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

126263763873 is a deficient number, since it is larger than the sum of its proper divisors (77942279007).

126263763873 is a wasteful number, since it uses less digits than its factorization.

126263763873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4927846 (or 4927840 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 54.

The spelling of 126263763873 in words is "one hundred twenty-six billion, two hundred sixty-three million, seven hundred sixty-three thousand, eight hundred seventy-three".