2120745512 has 16 divisors (see below), whose sum is σ = 4210303860. Its totient is φ = 997997824.

The previous prime is 2120745479. The next prime is 2120745547. The reversal of 2120745512 is 2155470212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1629413956 + 491331556 = 40366^2 + 22166^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7796723 + ... + 7796994.

Almost surely, 2^2120745512 is an apocalyptic number.

It is an amenable number.

2120745512 is a deficient number, since it is larger than the sum of its proper divisors (2089558348).

2120745512 is a wasteful number, since it uses less digits than its factorization.

2120745512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15593740 (or 15593736 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 2120745512 is about 46051.5527642663. The cubic root of 2120745512 is about 1284.7822231334.

The spelling of 2120745512 in words is "two billion, one hundred twenty million, seven hundred forty-five thousand, five hundred twelve".