88501249621 has 2 divisors, whose sum is σ = 88501249622. Its totient is φ = 88501249620.

The previous prime is 88501249619. The next prime is 88501249717. The reversal of 88501249621 is 12694210588.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80832744721 + 7668504900 = 284311^2 + 87570^2 .

It is a cyclic number.

It is not a de Polignac number, because 88501249621 - 2¹ = 88501249619 is a prime.

Together with 88501249619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88501249321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44250624810 + 44250624811.

It is an arithmetic number, because the mean of its divisors is an integer number (44250624811).

Almost surely, 2^88501249621 is an apocalyptic number.

It is an amenable number.

88501249621 is a deficient number, since it is larger than the sum of its proper divisors (1).

88501249621 is an equidigital number, since it uses as much as digits as its factorization.

88501249621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 88501249621 in words is "eighty-eight billion, five hundred one million, two hundred forty-nine thousand, six hundred twenty-one".