2661972630 has 32 divisors (see below), whose sum is σ = 6408910944. Its totient is φ = 707617536.

The previous prime is 2661972629. The next prime is 2661972671. The reversal of 2661972630 is 362791662.

It is a congruent number.

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, 130447 + ... + 149466.

It is an arithmetic number, because the mean of its divisors is an integer number (200278467).

Almost surely, 2^2661972630 is an apocalyptic number.

2661972630 is an abundant number, since it is smaller than the sum of its proper divisors (3746938314).

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

2661972630 is a wasteful number, since it uses less digits than its factorization.

2661972630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280240.

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 2661972630 is about 51594.3081163029. The cubic root of 2661972630 is about 1385.9084050004.

The spelling of 2661972630 in words is "two billion, six hundred sixty-one million, nine hundred seventy-two thousand, six hundred thirty".