5156645651 has 2 divisors, whose sum is σ = 5156645652. Its totient is φ = 5156645650.

The previous prime is 5156645647. The next prime is 5156645677. The reversal of 5156645651 is 1565466515.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5156645651 - 2² = 5156645647 is a prime.

It is not a weakly prime, because it can be changed into another prime (5156245651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2578322825 + 2578322826.

It is an arithmetic number, because the mean of its divisors is an integer number (2578322826).

Almost surely, 2^5156645651 is an apocalyptic number.

5156645651 is a deficient number, since it is larger than the sum of its proper divisors (1).

5156645651 is an equidigital number, since it uses as much as digits as its factorization.

5156645651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540000, while the sum is 44.

The square root of 5156645651 is about 71809.7879888250. The cubic root of 5156645651 is about 1727.6499941037.

The spelling of 5156645651 in words is "five billion, one hundred fifty-six million, six hundred forty-five thousand, six hundred fifty-one".