2126157600172 has 24 divisors (see below), whose sum is σ = 3921949463600. Its totient is φ = 1005753278016.

The previous prime is 2126157600169. The next prime is 2126157600173. The reversal of 2126157600172 is 2710067516212.

It is a super-2 number, since 2×2126157600172² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2126157600173) by changing a digit.

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, 19027347 + ... + 19138762.

Almost surely, 2^{2126157600172} is an apocalyptic number.

It is an amenable number.

2126157600172 is a deficient number, since it is larger than the sum of its proper divisors (1795791863428).

2126157600172 is a wasteful number, since it uses less digits than its factorization.

2126157600172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38166865 (or 38166863 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The spelling of 2126157600172 in words is "two trillion, one hundred twenty-six billion, one hundred fifty-seven million, six hundred thousand, one hundred seventy-two".