670489362816 has 384 divisors, whose sum is σ = 2261750652000. Its totient is φ = 174405353472.

The previous prime is 670489362793. The next prime is 670489362817. The reversal of 670489362816 is 618263984076.

It is a tau number, because it is divible by the number of its divisors (384).

It is a self number, because there is not a number n which added to its sum of digits gives 670489362816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670489362817) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17837610 + ... + 17875158.

Almost surely, 2^670489362816 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 670489362816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1130875326000).

670489362816 is an abundant number, since it is smaller than the sum of its proper divisors (1591261289184).

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

670489362816 is a wasteful number, since it uses less digits than its factorization.

670489362816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37666 (or 37647 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 60.

The spelling of 670489362816 in words is "six hundred seventy billion, four hundred eighty-nine million, three hundred sixty-two thousand, eight hundred sixteen".