15680142753855 has 64 divisors (see below), whose sum is σ = 25546239793152. Its totient is φ = 8210589488640.

The previous prime is 15680142753853. The next prime is 15680142753901. The reversal of 15680142753855 is 55835724108651.

It is a Cunningham number, because it is equal to 3959816²-1.

It is not a de Polignac number, because 15680142753855 - 2¹ = 15680142753853 is a prime.

It is a super-2 number, since 2×15680142753855² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15680142753853) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1207737694 + ... + 1207750676.

It is an arithmetic number, because the mean of its divisors is an integer number (399159996768).

Almost surely, 2^{15680142753855} is an apocalyptic number.

15680142753855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15680142753855 is a deficient number, since it is larger than the sum of its proper divisors (9866097039297).

15680142753855 is a wasteful number, since it uses less digits than its factorization.

15680142753855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15368.

The product of its (nonzero) digits is 40320000, while the sum is 60.

The spelling of 15680142753855 in words is "fifteen trillion, six hundred eighty billion, one hundred forty-two million, seven hundred fifty-three thousand, eight hundred fifty-five".