2153051333861 has 2 divisors, whose sum is σ = 2153051333862. Its totient is φ = 2153051333860.

The previous prime is 2153051333833. The next prime is 2153051333863. The reversal of 2153051333861 is 1683331503512.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2029784337025 + 123266996836 = 1424705^2 + 351094^2 .

It is a cyclic number.

It is not a de Polignac number, because 2153051333861 - 2³⁸ = 1878173426917 is a prime.

Together with 2153051333863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2153051333863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076525666930 + 1076525666931.

It is an arithmetic number, because the mean of its divisors is an integer number (1076525666931).

Almost surely, 2^{2153051333861} is an apocalyptic number.

It is an amenable number.

2153051333861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2153051333861 is an equidigital number, since it uses as much as digits as its factorization.

2153051333861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 2153051333861 in words is "two trillion, one hundred fifty-three billion, fifty-one million, three hundred thirty-three thousand, eight hundred sixty-one".