5151720650 has 24 divisors (see below), whose sum is σ = 9586014060. Its totient is φ = 2059868160.

The previous prime is 5151720617. The next prime is 5151720653. The reversal of 5151720650 is 560271515.

It can be written as a sum of positive squares in 6 ways, for example, as 865006921 + 4286713729 = 29411^2 + 65473^2 .

It is not an unprimeable number, because it can be changed into a prime (5151720653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115292 + ... + 153608.

Almost surely, 2^5151720650 is an apocalyptic number.

5151720650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5151720650 is a deficient number, since it is larger than the sum of its proper divisors (4434293410).

5151720650 is a wasteful number, since it uses less digits than its factorization.

5151720650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41018 (or 41013 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 32.

The square root of 5151720650 is about 71775.4878074681. The cubic root of 5151720650 is about 1727.0998051643.

The spelling of 5151720650 in words is "five billion, one hundred fifty-one million, seven hundred twenty thousand, six hundred fifty".