6451611970 has 16 divisors (see below), whose sum is σ = 11614787640. Its totient is φ = 2580225664.

The previous prime is 6451611961. The next prime is 6451611983. The reversal of 6451611970 is 791161546.

It can be written as a sum of positive squares in 4 ways, for example, as 6299755641 + 151856329 = 79371^2 + 12323^2 .

It is a super-2 number, since 2×6451611970² = 83246594022894561800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16584 + ... + 114796.

Almost surely, 2^6451611970 is an apocalyptic number.

6451611970 is a deficient number, since it is larger than the sum of its proper divisors (5163175670).

6451611970 is a wasteful number, since it uses less digits than its factorization.

6451611970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104789.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 6451611970 is about 80321.9270809659. The cubic root of 6451611970 is about 1861.6130426604.

The spelling of 6451611970 in words is "six billion, four hundred fifty-one million, six hundred eleven thousand, nine hundred seventy".