2126638731711 has 64 divisors (see below), whose sum is σ = 3345709086720. Its totient is φ = 1188905195520.

The previous prime is 2126638731697. The next prime is 2126638731821. The reversal of 2126638731711 is 1171378366212.

It is not a de Polignac number, because 2126638731711 - 2¹⁹ = 2126638207423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126638732711) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 76951866 + ... + 76979496.

It is an arithmetic number, because the mean of its divisors is an integer number (52276704480).

Almost surely, 2^{2126638731711} is an apocalyptic number.

2126638731711 is a deficient number, since it is larger than the sum of its proper divisors (1219070355009).

2126638731711 is a wasteful number, since it uses less digits than its factorization.

2126638731711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31696.

The product of its digits is 508032, while the sum is 48.

The spelling of 2126638731711 in words is "two trillion, one hundred twenty-six billion, six hundred thirty-eight million, seven hundred thirty-one thousand, seven hundred eleven".