88347949610821 has 2 divisors, whose sum is σ = 88347949610822. Its totient is φ = 88347949610820.

The previous prime is 88347949610807. The next prime is 88347949610867. The reversal of 88347949610821 is 12801694974388.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45934316480196 + 42413633130625 = 6777486^2 + 6512575^2 .

It is a cyclic number.

It is not a de Polignac number, because 88347949610821 - 2²³ = 88347941222213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88347949613821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44173974805410 + 44173974805411.

It is an arithmetic number, because the mean of its divisors is an integer number (44173974805411).

Almost surely, 2^{88347949610821} is an apocalyptic number.

It is an amenable number.

88347949610821 is a deficient number, since it is larger than the sum of its proper divisors (1).

88347949610821 is an equidigital number, since it uses as much as digits as its factorization.

88347949610821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 167215104, while the sum is 70.

The spelling of 88347949610821 in words is "eighty-eight trillion, three hundred forty-seven billion, nine hundred forty-nine million, six hundred ten thousand, eight hundred twenty-one".