2156651032559 has 2 divisors, whose sum is σ = 2156651032560. Its totient is φ = 2156651032558.

The previous prime is 2156651032493. The next prime is 2156651032583. The reversal of 2156651032559 is 9552301566512.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2156651032559 is a prime.

It is a super-2 number, since 2×2156651032559² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2156651032759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078325516279 + 1078325516280.

It is an arithmetic number, because the mean of its divisors is an integer number (1078325516280).

Almost surely, 2^{2156651032559} is an apocalyptic number.

2156651032559 is a deficient number, since it is larger than the sum of its proper divisors (1).

2156651032559 is an equidigital number, since it uses as much as digits as its factorization.

2156651032559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430000, while the sum is 50.

The spelling of 2156651032559 in words is "two trillion, one hundred fifty-six billion, six hundred fifty-one million, thirty-two thousand, five hundred fifty-nine".