66695070929760 has 1152 divisors, whose sum is σ = 304374462013440. Its totient is φ = 12901242470400.

The previous prime is 66695070929713. The next prime is 66695070929761. The reversal of 66695070929760 is 6792907059666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66695070929761) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 76750500 + ... + 77614620.

It is an arithmetic number, because the mean of its divisors is an integer number (264213942720).

Almost surely, 2^{66695070929760} is an apocalyptic number.

66695070929760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66695070929760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152187231006720).

66695070929760 is an abundant number, since it is smaller than the sum of its proper divisors (237679391083680).

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

66695070929760 is a wasteful number, since it uses less digits than its factorization.

66695070929760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864212 (or 864201 counting only the distinct ones).

The product of its (nonzero) digits is 462944160, while the sum is 72.

The spelling of 66695070929760 in words is "sixty-six trillion, six hundred ninety-five billion, seventy million, nine hundred twenty-nine thousand, seven hundred sixty".