66155116000 has 96 divisors (see below), whose sum is σ = 167786760960. Its totient is φ = 25608384000.

The previous prime is 66155115991. The next prime is 66155116007. The reversal of 66155116000 is 61155166.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66155116007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142755 + ... + 390754.

It is an arithmetic number, because the mean of its divisors is an integer number (1747778760).

Almost surely, 2^66155116000 is an apocalyptic number.

It is an amenable number.

66155116000 is an abundant number, since it is smaller than the sum of its proper divisors (101631644960).

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

66155116000 is a wasteful number, since it uses less digits than its factorization.

66155116000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533565 (or 533547 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 66155116000 in words is "sixty-six billion, one hundred fifty-five million, one hundred sixteen thousand".