667526838354420 has 96 divisors (see below), whose sum is σ = 2041048580530176. Its totient is φ = 161661393590400.

The previous prime is 667526838354401. The next prime is 667526838354437. The reversal of 667526838354420 is 24453838625766.

It is a hoax number, since the sum of its digits (69) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 509640744 + ... + 510948863.

It is an arithmetic number, because the mean of its divisors is an integer number (21260922713856).

Almost surely, 2^{667526838354420} is an apocalyptic number.

667526838354420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

667526838354420 is an abundant number, since it is smaller than the sum of its proper divisors (1373521742175756).

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

667526838354420 is a wasteful number, since it uses less digits than its factorization.

667526838354420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020590621 (or 1020590619 counting only the distinct ones).

The product of its (nonzero) digits is 1393459200, while the sum is 69.

The spelling of 667526838354420 in words is "six hundred sixty-seven trillion, five hundred twenty-six billion, eight hundred thirty-eight million, three hundred fifty-four thousand, four hundred twenty".