2125742784912 has 160 divisors (see below), whose sum is σ = 6370038005760. Its totient is φ = 677445310080.

The previous prime is 2125742784883. The next prime is 2125742784923. The reversal of 2125742784912 is 2194872475212.

2125742784912 is a `hidden beast` number, since 2 + 1 + 2 + 57 + 427 + 84 + 91 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20924223 + ... + 21025569.

It is an arithmetic number, because the mean of its divisors is an integer number (39812737536).

Almost surely, 2^{2125742784912} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2125742784912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3185019002880).

2125742784912 is an abundant number, since it is smaller than the sum of its proper divisors (4244295220848).

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

2125742784912 is a wasteful number, since it uses less digits than its factorization.

2125742784912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103498 (or 103486 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The spelling of 2125742784912 in words is "two trillion, one hundred twenty-five billion, seven hundred forty-two million, seven hundred eighty-four thousand, nine hundred twelve".