15775085990 has 8 divisors (see below), whose sum is σ = 28395154800. Its totient is φ = 6310034392.

The previous prime is 15775085983. The next prime is 15775086023. The reversal of 15775085990 is 9958057751.

15775085990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 788754290 + ... + 788754309.

It is an arithmetic number, because the mean of its divisors is an integer number (3549394350).

Almost surely, 2^15775085990 is an apocalyptic number.

15775085990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15775085990 is a deficient number, since it is larger than the sum of its proper divisors (12620068810).

15775085990 is a wasteful number, since it uses less digits than its factorization.

15775085990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577508606.

The product of its (nonzero) digits is 3969000, while the sum is 56.

The spelling of 15775085990 in words is "fifteen billion, seven hundred seventy-five million, eighty-five thousand, nine hundred ninety".