670221355524 has 48 divisors (see below), whose sum is σ = 1787730739200. Its totient is φ = 191441052576.

The previous prime is 670221355519. The next prime is 670221355541. The reversal of 670221355524 is 425553122076.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 738244 + ... + 1373115.

It is an arithmetic number, because the mean of its divisors is an integer number (37244390400).

Almost surely, 2^670221355524 is an apocalyptic number.

It is an amenable number.

670221355524 is an abundant number, since it is smaller than the sum of its proper divisors (1117509383676).

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

670221355524 is a wasteful number, since it uses less digits than its factorization.

670221355524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115152 (or 2115150 counting only the distinct ones).

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

The spelling of 670221355524 in words is "six hundred seventy billion, two hundred twenty-one million, three hundred fifty-five thousand, five hundred twenty-four".