66117152070 has 64 divisors (see below), whose sum is σ = 176337570240. Its totient is φ = 17628724224.

The previous prime is 66117152053. The next prime is 66117152089. The reversal of 66117152070 is 7025171166.

66117152070 is a `hidden beast` number, since 6 + 61 + 1 + 7 + 1 + 520 + 70 = 666.

It is a Curzon number.

It is a congruent number.

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, 2605564 + ... + 2630816.

It is an arithmetic number, because the mean of its divisors is an integer number (2755274535).

Almost surely, 2^66117152070 is an apocalyptic number.

66117152070 is an abundant number, since it is smaller than the sum of its proper divisors (110220418170).

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

66117152070 is a wasteful number, since it uses less digits than its factorization.

66117152070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34966 (or 34960 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The spelling of 66117152070 in words is "sixty-six billion, one hundred seventeen million, one hundred fifty-two thousand, seventy".