667801073376 has 120 divisors (see below), whose sum is σ = 1988845578720. Its totient is φ = 219782564352.

The previous prime is 667801073363. The next prime is 667801073447. The reversal of 667801073376 is 673370108766.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1425861 + ... + 1835396.

It is an arithmetic number, because the mean of its divisors is an integer number (16573713156).

Almost surely, 2^667801073376 is an apocalyptic number.

It is an amenable number.

667801073376 is an abundant number, since it is smaller than the sum of its proper divisors (1321044505344).

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

667801073376 is a wasteful number, since it uses less digits than its factorization.

667801073376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3261358 (or 3261341 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 54.

The spelling of 667801073376 in words is "six hundred sixty-seven billion, eight hundred one million, seventy-three thousand, three hundred seventy-six".