88390720861709 has 16 divisors (see below), whose sum is σ = 101755527283200. Its totient is φ = 75210420437424.

The previous prime is 88390720861643. The next prime is 88390720861739. The reversal of 88390720861709 is 90716802709388.

It is a cyclic number.

It is not a de Polignac number, because 88390720861709 - 2¹² = 88390720857613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88390720861739) 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 in 15 ways as a sum of consecutive naturals, for example, 4342334 + ... + 13987040.

It is an arithmetic number, because the mean of its divisors is an integer number (6359720455200).

Almost surely, 2^{88390720861709} is an apocalyptic number.

It is an amenable number.

88390720861709 is a deficient number, since it is larger than the sum of its proper divisors (13364806421491).

88390720861709 is a wasteful number, since it uses less digits than its factorization.

88390720861709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9654272.

The product of its (nonzero) digits is 73156608, while the sum is 68.

The spelling of 88390720861709 in words is "eighty-eight trillion, three hundred ninety billion, seven hundred twenty million, eight hundred sixty-one thousand, seven hundred nine".