88724097421 has 2 divisors, whose sum is σ = 88724097422. Its totient is φ = 88724097420.

The previous prime is 88724097383. The next prime is 88724097431. The reversal of 88724097421 is 12479042788.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87326160100 + 1397937321 = 295510^2 + 37389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88724097421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88724097431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44362048710 + 44362048711.

It is an arithmetic number, because the mean of its divisors is an integer number (44362048711).

Almost surely, 2^88724097421 is an apocalyptic number.

It is an amenable number.

88724097421 is a deficient number, since it is larger than the sum of its proper divisors (1).

88724097421 is an equidigital number, since it uses as much as digits as its factorization.

88724097421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1806336, while the sum is 52.

The spelling of 88724097421 in words is "eighty-eight billion, seven hundred twenty-four million, ninety-seven thousand, four hundred twenty-one".