88780339969 has 2 divisors, whose sum is σ = 88780339970. Its totient is φ = 88780339968.

The previous prime is 88780339961. The next prime is 88780340029. The reversal of 88780339969 is 96993308788.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87672249025 + 1108090944 = 296095^2 + 33288^2 .

It is a cyclic number.

It is not a de Polignac number, because 88780339969 - 2³ = 88780339961 is a prime.

It is a super-2 number, since 2×88780339969² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 88780339898 and 88780339907.

It is not a weakly prime, because it can be changed into another prime (88780339961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44390169984 + 44390169985.

It is an arithmetic number, because the mean of its divisors is an integer number (44390169985).

Almost surely, 2^88780339969 is an apocalyptic number.

It is an amenable number.

88780339969 is a deficient number, since it is larger than the sum of its proper divisors (1).

88780339969 is an equidigital number, since it uses as much as digits as its factorization.

88780339969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141087744, while the sum is 70.

The spelling of 88780339969 in words is "eighty-eight billion, seven hundred eighty million, three hundred thirty-nine thousand, nine hundred sixty-nine".