66700329544 has 16 divisors (see below), whose sum is σ = 130500645120. Its totient is φ = 31900157520.

The previous prime is 66700329529. The next prime is 66700329571. The reversal of 66700329544 is 44592300766.

It is a super-2 number, since 2×66700329544² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 66700329494 and 66700329503.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181250712 + ... + 181251079.

It is an arithmetic number, because the mean of its divisors is an integer number (8156290320).

Almost surely, 2^66700329544 is an apocalyptic number.

It is an amenable number.

66700329544 is a deficient number, since it is larger than the sum of its proper divisors (63800315576).

66700329544 is a wasteful number, since it uses less digits than its factorization.

66700329544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362501820 (or 362501816 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 66700329544 in words is "sixty-six billion, seven hundred million, three hundred twenty-nine thousand, five hundred forty-four".