213156531035620 has 48 divisors (see below), whose sum is σ = 454813425577728. Its totient is φ = 83899516020480.

The previous prime is 213156531035557. The next prime is 213156531035659. The reversal of 213156531035620 is 26530135651312.

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, 168741534 + ... + 170000053.

It is an arithmetic number, because the mean of its divisors is an integer number (9475279699536).

Almost surely, 2^{213156531035620} is an apocalyptic number.

213156531035620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213156531035620 is an abundant number, since it is smaller than the sum of its proper divisors (241656894542108).

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

213156531035620 is a wasteful number, since it uses less digits than its factorization.

213156531035620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338742100 (or 338742098 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 43.

Adding to 213156531035620 its reverse (26530135651312), we get a palindrome (239686666686932).

The spelling of 213156531035620 in words is "two hundred thirteen trillion, one hundred fifty-six billion, five hundred thirty-one million, thirty-five thousand, six hundred twenty".