213885970726 has 16 divisors (see below), whose sum is σ = 339580528560. Its totient is φ = 100754655840.

The previous prime is 213885970723. The next prime is 213885970741. The reversal of 213885970726 is 627079588312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213885970721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15541681 + ... + 15555436.

It is an arithmetic number, because the mean of its divisors is an integer number (21223783035).

Almost surely, 2^213885970726 is an apocalyptic number.

213885970726 is a deficient number, since it is larger than the sum of its proper divisors (125694557834).

213885970726 is a wasteful number, since it uses less digits than its factorization.

213885970726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31097319.

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 213885970726 in words is "two hundred thirteen billion, eight hundred eighty-five million, nine hundred seventy thousand, seven hundred twenty-six".