126278564677 has 8 divisors (see below), whose sum is σ = 126363267392. Its totient is φ = 126193896000.

The previous prime is 126278564669. The next prime is 126278564683. The reversal of 126278564677 is 776465872621.

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 126278564677 - 2³ = 126278564669 is a prime.

It is a super-2 number, since 2×126278564677² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126278564777) 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, 13272352 + ... + 13281862.

It is an arithmetic number, because the mean of its divisors is an integer number (15795408424).

Almost surely, 2^126278564677 is an apocalyptic number.

It is an amenable number.

126278564677 is a deficient number, since it is larger than the sum of its proper divisors (84702715).

126278564677 is an equidigital number, since it uses as much as digits as its factorization.

126278564677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17019.

The product of its digits is 47416320, while the sum is 61.

The spelling of 126278564677 in words is "one hundred twenty-six billion, two hundred seventy-eight million, five hundred sixty-four thousand, six hundred seventy-seven".