2151611544611 has 2 divisors, whose sum is σ = 2151611544612. Its totient is φ = 2151611544610.

The previous prime is 2151611544559. The next prime is 2151611544617. The reversal of 2151611544611 is 1164451161512.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2151611544611 is a prime.

It is not a weakly prime, because it can be changed into another prime (2151611544617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075805772305 + 1075805772306.

It is an arithmetic number, because the mean of its divisors is an integer number (1075805772306).

Almost surely, 2^{2151611544611} is an apocalyptic number.

2151611544611 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151611544611 is an equidigital number, since it uses as much as digits as its factorization.

2151611544611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 38.

The spelling of 2151611544611 in words is "two trillion, one hundred fifty-one billion, six hundred eleven million, five hundred forty-four thousand, six hundred eleven".