88332765421 has 2 divisors, whose sum is σ = 88332765422. Its totient is φ = 88332765420.

The previous prime is 88332765401. The next prime is 88332765431. The reversal of 88332765421 is 12456723388.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82340302500 + 5992462921 = 286950^2 + 77411^2 .

It is a cyclic number.

It is not a de Polignac number, because 88332765421 - 2⁹ = 88332764909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88332765401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44166382710 + 44166382711.

It is an arithmetic number, because the mean of its divisors is an integer number (44166382711).

Almost surely, 2^88332765421 is an apocalyptic number.

It is an amenable number.

88332765421 is a deficient number, since it is larger than the sum of its proper divisors (1).

88332765421 is an equidigital number, since it uses as much as digits as its factorization.

88332765421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 49.

The spelling of 88332765421 in words is "eighty-eight billion, three hundred thirty-two million, seven hundred sixty-five thousand, four hundred twenty-one".