7749539012 has 24 divisors (see below), whose sum is σ = 14397984216. Its totient is φ = 3637052928.

The previous prime is 7749538969. The next prime is 7749539033. The reversal of 7749539012 is 2109359477.

It can be written as a sum of positive squares in 4 ways, for example, as 484704256 + 7264834756 = 22016^2 + 85234^2 .

It is a super-2 number, since 2×7749539012² (a number of 21 digits) 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, 127403 + ... + 178130.

It is an arithmetic number, because the mean of its divisors is an integer number (599916009).

Almost surely, 2^7749539012 is an apocalyptic number.

It is an amenable number.

7749539012 is a deficient number, since it is larger than the sum of its proper divisors (6648445204).

7749539012 is a wasteful number, since it uses less digits than its factorization.

7749539012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305927 (or 305925 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 47.

The square root of 7749539012 is about 88031.4660334587. The cubic root of 7749539012 is about 1978.9065666313.

The spelling of 7749539012 in words is "seven billion, seven hundred forty-nine million, five hundred thirty-nine thousand, twelve".