2149694866570 has 32 divisors (see below), whose sum is σ = 4101737477328. Its totient is φ = 808374033408.

The previous prime is 2149694866507. The next prime is 2149694866609. The reversal of 2149694866570 is 756684969412.

It can be written as a sum of positive squares in 8 ways, for example, as 2014523196921 + 135171669649 = 1419339^2 + 367657^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2149694866496 and 2149694866505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7060297 + ... + 7358476.

Almost surely, 2^{2149694866570} is an apocalyptic number.

2149694866570 is a deficient number, since it is larger than the sum of its proper divisors (1952042610758).

2149694866570 is a wasteful number, since it uses less digits than its factorization.

2149694866570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14419674.

The product of its (nonzero) digits is 156764160, while the sum is 67.

The spelling of 2149694866570 in words is "two trillion, one hundred forty-nine billion, six hundred ninety-four million, eight hundred sixty-six thousand, five hundred seventy".