670451355420 has 192 divisors, whose sum is σ = 2342811534336. Its totient is φ = 139176069120.

The previous prime is 670451355397. The next prime is 670451355463. The reversal of 670451355420 is 24553154076.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4608432 + ... + 4751688.

It is an arithmetic number, because the mean of its divisors is an integer number (12202143408).

Almost surely, 2^670451355420 is an apocalyptic number.

670451355420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670451355420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1171405767168).

670451355420 is an abundant number, since it is smaller than the sum of its proper divisors (1672360178916).

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

670451355420 is a wasteful number, since it uses less digits than its factorization.

670451355420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144300 (or 144298 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 42.

The spelling of 670451355420 in words is "six hundred seventy billion, four hundred fifty-one million, three hundred fifty-five thousand, four hundred twenty".