670491698948136 has 384 divisors, whose sum is σ = 2134891047744000. Its totient is φ = 195435789389568.

The previous prime is 670491698948129. The next prime is 670491698948209. The reversal of 670491698948136 is 631849896194076.

670491698948136 is a `hidden beast` number, since 6 + 7 + 0 + 4 + 9 + 16 + 98 + 9 + 481 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12397430551 + ... + 12397484633.

It is an arithmetic number, because the mean of its divisors is an integer number (5559612103500).

Almost surely, 2^{670491698948136} 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 670491698948136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1067445523872000).

670491698948136 is an abundant number, since it is smaller than the sum of its proper divisors (1464399348795864).

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

670491698948136 is a wasteful number, since it uses less digits than its factorization.

670491698948136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79955 (or 79939 counting only the distinct ones).

The product of its (nonzero) digits is 3386105856, while the sum is 81.

The spelling of 670491698948136 in words is "six hundred seventy trillion, four hundred ninety-one billion, six hundred ninety-eight million, nine hundred forty-eight thousand, one hundred thirty-six".