126378968881 has 8 divisors (see below), whose sum is σ = 145977846624. Its totient is φ = 108131737920.

The previous prime is 126378968879. The next prime is 126378968897. The reversal of 126378968881 is 188869873621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126378968881 - 2¹ = 126378968879 is a prime.

It is a super-2 number, since 2×126378968881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126378968831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337911495 + ... + 337911868.

It is an arithmetic number, because the mean of its divisors is an integer number (18247230828).

Almost surely, 2^126378968881 is an apocalyptic number.

126378968881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126378968881 is a deficient number, since it is larger than the sum of its proper divisors (19598877743).

126378968881 is a wasteful number, since it uses less digits than its factorization.

126378968881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675823391.

The product of its digits is 55738368, while the sum is 67.

The spelling of 126378968881 in words is "one hundred twenty-six billion, three hundred seventy-eight million, nine hundred sixty-eight thousand, eight hundred eighty-one".