66670440404780 has 48 divisors (see below), whose sum is σ = 147380240028000. Its totient is φ = 25263991881216.

The previous prime is 66670440404693. The next prime is 66670440404797. The reversal of 66670440404780 is 8740404407666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14226776 + ... + 18323264.

It is an arithmetic number, because the mean of its divisors is an integer number (3070421667250).

Almost surely, 2^{66670440404780} is an apocalyptic number.

It is an amenable number.

66670440404780 is an abundant number, since it is smaller than the sum of its proper divisors (80709799623220).

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

66670440404780 is a wasteful number, since it uses less digits than its factorization.

66670440404780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4139346 (or 4139344 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 56.

The spelling of 66670440404780 in words is "sixty-six trillion, six hundred seventy billion, four hundred forty million, four hundred four thousand, seven hundred eighty".