66670037004 has 96 divisors (see below), whose sum is σ = 168440903680. Its totient is φ = 20452497408.

The previous prime is 66670036987. The next prime is 66670037017. The reversal of 66670037004 is 40073007666.

It is a super-2 number, since 2×66670037004² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5671557 + ... + 5683299.

Almost surely, 2^66670037004 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 66670037004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84220451840).

66670037004 is an abundant number, since it is smaller than the sum of its proper divisors (101770866676).

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

66670037004 is a wasteful number, since it uses less digits than its factorization.

66670037004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12479 (or 12477 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 39.

It can be divided in two parts, 666 and 70037004, that multiplied together give a palindrome (46644644664).

The spelling of 66670037004 in words is "sixty-six billion, six hundred seventy million, thirty-seven thousand, four".