2126358931506 has 48 divisors (see below), whose sum is σ = 4534597345824. Its totient is φ = 664559209728.

The previous prime is 2126358931469. The next prime is 2126358931519. The reversal of 2126358931506 is 6051398536212.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4850200 + ... + 5270403.

It is an arithmetic number, because the mean of its divisors is an integer number (94470778038).

Almost surely, 2^{2126358931506} is an apocalyptic number.

2126358931506 is an abundant number, since it is smaller than the sum of its proper divisors (2408238414318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2126358931506 is a wasteful number, since it uses less digits than its factorization.

2126358931506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10120743 (or 10120724 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 51.

The spelling of 2126358931506 in words is "two trillion, one hundred twenty-six billion, three hundred fifty-eight million, nine hundred thirty-one thousand, five hundred six".