66732415335936 has 2240 divisors, whose sum is σ = 246541598899200. Its totient is φ = 17993599303680.

The previous prime is 66732415335907. The next prime is 66732415335941. The reversal of 66732415335936 is 63953351423766.

66732415335936 is a `hidden beast` number, since 6 + 6 + 7 + 3 + 2 + 4 + 1 + 5 + 33 + 593 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 385736504746 + ... + 385736504918.

Almost surely, 2^{66732415335936} 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 66732415335936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123270799449600).

66732415335936 is an abundant number, since it is smaller than the sum of its proper divisors (179809183563264).

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

66732415335936 is an equidigital number, since it uses as much as digits as its factorization.

66732415335936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 339 counting only the distinct ones).

The product of its digits is 220449600, while the sum is 63.

The spelling of 66732415335936 in words is "sixty-six trillion, seven hundred thirty-two billion, four hundred fifteen million, three hundred thirty-five thousand, nine hundred thirty-six".