20045057651 has 2 divisors, whose sum is σ = 20045057652. Its totient is φ = 20045057650.

The previous prime is 20045057639. The next prime is 20045057699. The reversal of 20045057651 is 15675054002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20045057651 - 2¹⁰ = 20045056627 is a prime.

It is not a weakly prime, because it can be changed into another prime (20045057621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10022528825 + 10022528826.

It is an arithmetic number, because the mean of its divisors is an integer number (10022528826).

Almost surely, 2^20045057651 is an apocalyptic number.

20045057651 is a deficient number, since it is larger than the sum of its proper divisors (1).

20045057651 is an equidigital number, since it uses as much as digits as its factorization.

20045057651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42000, while the sum is 35.

The spelling of 20045057651 in words is "twenty billion, forty-five million, fifty-seven thousand, six hundred fifty-one".