213875211557658 has 48 divisors (see below), whose sum is σ = 515941151463360. Its totient is φ = 57891034703232.

The previous prime is 213875211557647. The next prime is 213875211557681. The reversal of 213875211557658 is 856755112578312.

It is a super-2 number, since 2×213875211557658² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7052986143 + ... + 7053016466.

It is an arithmetic number, because the mean of its divisors is an integer number (10748773988820).

Almost surely, 2^{213875211557658} is an apocalyptic number.

213875211557658 is an abundant number, since it is smaller than the sum of its proper divisors (302065939905702).

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

213875211557658 is a wasteful number, since it uses less digits than its factorization.

213875211557658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14106002659 (or 14106002640 counting only the distinct ones).

The product of its digits is 141120000, while the sum is 66.

The spelling of 213875211557658 in words is "two hundred thirteen trillion, eight hundred seventy-five billion, two hundred eleven million, five hundred fifty-seven thousand, six hundred fifty-eight".