667739077936 has 40 divisors (see below), whose sum is σ = 1526260757504. Its totient is φ = 276942473280.

The previous prime is 667739077903. The next prime is 667739077937. The reversal of 667739077936 is 639770937766.

It is not an unprimeable number, because it can be changed into a prime (667739077937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96157110 + ... + 96164053.

Almost surely, 2^667739077936 is an apocalyptic number.

It is an amenable number.

667739077936 is an abundant number, since it is smaller than the sum of its proper divisors (858521679568).

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

667739077936 is a wasteful number, since it uses less digits than its factorization.

667739077936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192321209 (or 192321203 counting only the distinct ones).

The product of its (nonzero) digits is 378071064, while the sum is 70.

The spelling of 667739077936 in words is "six hundred sixty-seven billion, seven hundred thirty-nine million, seventy-seven thousand, nine hundred thirty-six".