2661245512 has 8 divisors (see below), whose sum is σ = 4989835350. Its totient is φ = 1330622752.

The previous prime is 2661245497. The next prime is 2661245513. The reversal of 2661245512 is 2155421662.

2661245512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2433054276 + 228191236 = 49326^2 + 15106^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2661245513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166327837 + ... + 166327852.

Almost surely, 2^2661245512 is an apocalyptic number.

It is an amenable number.

2661245512 is a deficient number, since it is larger than the sum of its proper divisors (2328589838).

2661245512 is a wasteful number, since it uses less digits than its factorization.

2661245512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332655695 (or 332655691 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The square root of 2661245512 is about 51587.2611407119. The cubic root of 2661245512 is about 1385.7822065185.

The spelling of 2661245512 in words is "two billion, six hundred sixty-one million, two hundred forty-five thousand, five hundred twelve".