126388137278 has 16 divisors (see below), whose sum is σ = 204639172416. Its totient is φ = 58197637920.

The previous prime is 126388137259. The next prime is 126388137307. The reversal of 126388137278 is 872731883621.

It is a super-2 number, since 2×126388137278² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5628101 + ... + 5650512.

It is an arithmetic number, because the mean of its divisors is an integer number (12789948276).

Almost surely, 2^126388137278 is an apocalyptic number.

126388137278 is a deficient number, since it is larger than the sum of its proper divisors (78251035138).

126388137278 is a wasteful number, since it uses less digits than its factorization.

126388137278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11279059.

The product of its digits is 5419008, while the sum is 56.

The spelling of 126388137278 in words is "one hundred twenty-six billion, three hundred eighty-eight million, one hundred thirty-seven thousand, two hundred seventy-eight".