15966942295536 has 40 divisors (see below), whose sum is σ = 45831038071760. Its totient is φ = 5322314098368.

The previous prime is 15966942295519. The next prime is 15966942295559. The reversal of 15966942295536 is 63559224966951.

15966942295536 is a `hidden beast` number, since 1 + 5 + 9 + 6 + 6 + 9 + 42 + 29 + 553 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18480256855 + ... + 18480257718.

It is an arithmetic number, because the mean of its divisors is an integer number (1145775951794).

Almost surely, 2^{15966942295536} is an apocalyptic number.

15966942295536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15966942295536 is an abundant number, since it is smaller than the sum of its proper divisors (29864095776224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15966942295536 is a wasteful number, since it uses less digits than its factorization.

15966942295536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36960514590 (or 36960514578 counting only the distinct ones).

The product of its digits is 944784000, while the sum is 72.

The spelling of 15966942295536 in words is "fifteen trillion, nine hundred sixty-six billion, nine hundred forty-two million, two hundred ninety-five thousand, five hundred thirty-six".