2661252770 has 32 divisors (see below), whose sum is σ = 5233256640. Its totient is φ = 966335040.

The previous prime is 2661252749. The next prime is 2661252779. The reversal of 2661252770 is 772521662.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2661252779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60929 + ... + 95051.

It is an arithmetic number, because the mean of its divisors is an integer number (163539270).

Almost surely, 2^2661252770 is an apocalyptic number.

2661252770 is a deficient number, since it is larger than the sum of its proper divisors (2572003870).

2661252770 is a wasteful number, since it uses less digits than its factorization.

2661252770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34850.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 2661252770 is about 51587.3314874883. The cubic root of 2661252770 is about 1385.7834663294.

The spelling of 2661252770 in words is "two billion, six hundred sixty-one million, two hundred fifty-two thousand, seven hundred seventy".