667288962840 has 32 divisors (see below), whose sum is σ = 2001866888880. Its totient is φ = 177943723392.

The previous prime is 667288962797. The next prime is 667288962841. The reversal of 667288962840 is 48269882766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667288962841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2780370559 + ... + 2780370798.

Almost surely, 2^667288962840 is an apocalyptic number.

667288962840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

667288962840 is an abundant number, since it is smaller than the sum of its proper divisors (1334577926040).

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

667288962840 is a wasteful number, since it uses less digits than its factorization.

667288962840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5560741371 (or 5560741367 counting only the distinct ones).

The product of its (nonzero) digits is 111476736, while the sum is 66.

The spelling of 667288962840 in words is "six hundred sixty-seven billion, two hundred eighty-eight million, nine hundred sixty-two thousand, eight hundred forty".