2156046407651 has 2 divisors, whose sum is σ = 2156046407652. Its totient is φ = 2156046407650.

The previous prime is 2156046407629. The next prime is 2156046407659. The reversal of 2156046407651 is 1567046406512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2156046407651 - 2¹⁰ = 2156046406627 is a prime.

It is a super-2 number, since 2×2156046407651² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2156046407596 and 2156046407605.

It is not a weakly prime, because it can be changed into another prime (2156046407659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078023203825 + 1078023203826.

It is an arithmetic number, because the mean of its divisors is an integer number (1078023203826).

Almost surely, 2^{2156046407651} is an apocalyptic number.

2156046407651 is a deficient number, since it is larger than the sum of its proper divisors (1).

2156046407651 is an equidigital number, since it uses as much as digits as its factorization.

2156046407651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 2156046407651 in words is "two trillion, one hundred fifty-six billion, forty-six million, four hundred seven thousand, six hundred fifty-one".