670401843840 has 512 divisors, whose sum is σ = 2478159360000. Its totient is φ = 171067244544.

The previous prime is 670401843833. The next prime is 670401843863. The reversal of 670401843840 is 48348104076.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 56620641 + ... + 56632479.

It is an arithmetic number, because the mean of its divisors is an integer number (4840155000).

Almost surely, 2^670401843840 is an apocalyptic number.

670401843840 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 670401843840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1239079680000).

670401843840 is an abundant number, since it is smaller than the sum of its proper divisors (1807757516160).

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

670401843840 is a wasteful number, since it uses less digits than its factorization.

670401843840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12009 (or 11991 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 670401843840 in words is "six hundred seventy billion, four hundred one million, eight hundred forty-three thousand, eight hundred forty".