88745790517861 has 2 divisors, whose sum is σ = 88745790517862. Its totient is φ = 88745790517860.

The previous prime is 88745790517771. The next prime is 88745790517873. The reversal of 88745790517861 is 16871509754788.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51929231965636 + 36816558552225 = 7206194^2 + 6067665^2 .

It is a cyclic number.

It is not a de Polignac number, because 88745790517861 - 2⁷ = 88745790517733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88745790517061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44372895258930 + 44372895258931.

It is an arithmetic number, because the mean of its divisors is an integer number (44372895258931).

Almost surely, 2^{88745790517861} is an apocalyptic number.

It is an amenable number.

88745790517861 is a deficient number, since it is larger than the sum of its proper divisors (1).

88745790517861 is an equidigital number, since it uses as much as digits as its factorization.

88745790517861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 948326400, while the sum is 76.

The spelling of 88745790517861 in words is "eighty-eight trillion, seven hundred forty-five billion, seven hundred ninety million, five hundred seventeen thousand, eight hundred sixty-one".