156666042543912 has 32 divisors (see below), whose sum is σ = 427271025120480. Its totient is φ = 47474558346560.

The previous prime is 156666042543869. The next prime is 156666042543973. The reversal of 156666042543912 is 219345240666651.

It is a happy 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, 296715989403 + ... + 296715989930.

It is an arithmetic number, because the mean of its divisors is an integer number (13352219535015).

Almost surely, 2^{156666042543912} is an apocalyptic number.

156666042543912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

156666042543912 is an abundant number, since it is smaller than the sum of its proper divisors (270604982576568).

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

156666042543912 is a wasteful number, since it uses less digits than its factorization.

156666042543912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593431979353 (or 593431979349 counting only the distinct ones).

The product of its (nonzero) digits is 55987200, while the sum is 60.

The spelling of 156666042543912 in words is "one hundred fifty-six trillion, six hundred sixty-six billion, forty-two million, five hundred forty-three thousand, nine hundred twelve".