66156655166112 has 192 divisors, whose sum is σ = 203077439712000. Its totient is φ = 18467253780480.

The previous prime is 66156655166023. The next prime is 66156655166131. The reversal of 66156655166112 is 21166155665166.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 692064 + ... + 11523552.

It is an arithmetic number, because the mean of its divisors is an integer number (1057694998500).

Almost surely, 2^{66156655166112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66156655166112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101538719856000).

66156655166112 is an abundant number, since it is smaller than the sum of its proper divisors (136920784545888).

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

66156655166112 is a wasteful number, since it uses less digits than its factorization.

66156655166112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10831719 (or 10831711 counting only the distinct ones).

The product of its digits is 11664000, while the sum is 57.

The spelling of 66156655166112 in words is "sixty-six trillion, one hundred fifty-six billion, six hundred fifty-five million, one hundred sixty-six thousand, one hundred twelve".