102128431765 has 8 divisors (see below), whose sum is σ = 122556113568. Its totient is φ = 81701415120.

The previous prime is 102128431759. The next prime is 102128431781. The reversal of 102128431765 is 567134821201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102128431765 - 2¹¹ = 102128429717 is a prime.

It is a super-2 number, since 2×102128431765² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280770 + ... + 532060.

It is an arithmetic number, because the mean of its divisors is an integer number (15319514196).

Almost surely, 2^102128431765 is an apocalyptic number.

It is an amenable number.

102128431765 is a deficient number, since it is larger than the sum of its proper divisors (20427681803).

102128431765 is an equidigital number, since it uses as much as digits as its factorization.

102128431765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332579.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 102128431765 in words is "one hundred two billion, one hundred twenty-eight million, four hundred thirty-one thousand, seven hundred sixty-five".