66736704033736 has 32 divisors (see below), whose sum is σ = 136831139095680. Its totient is φ = 30262811140800.

The previous prime is 66736704033733. The next prime is 66736704033757. The reversal of 66736704033736 is 63733040763766.

It is a super-2 number, since 2×66736704033736² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66736704033733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 900641856 + ... + 900715951.

It is an arithmetic number, because the mean of its divisors is an integer number (4275973096740).

Almost surely, 2^{66736704033736} is an apocalyptic number.

It is an amenable number.

66736704033736 is an abundant number, since it is smaller than the sum of its proper divisors (70094435061944).

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

66736704033736 is a wasteful number, since it uses less digits than its factorization.

66736704033736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801358245 (or 1801358241 counting only the distinct ones).

The product of its (nonzero) digits is 144027072, while the sum is 61.

The spelling of 66736704033736 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred four million, thirty-three thousand, seven hundred thirty-six".