213140113640 has 32 divisors (see below), whose sum is σ = 479642100480. Its totient is φ = 85242384192.

The previous prime is 213140113619. The next prime is 213140113663. The reversal of 213140113640 is 46311041312.

It is a happy number.

It is a super-2 number, since 2×213140113640² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172292 + ... + 675251.

It is an arithmetic number, because the mean of its divisors is an integer number (14988815640).

Almost surely, 2^213140113640 is an apocalyptic number.

213140113640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213140113640 is an abundant number, since it is smaller than the sum of its proper divisors (266501986840).

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

213140113640 is a wasteful number, since it uses less digits than its factorization.

213140113640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853841 (or 853837 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 213140113640 its reverse (46311041312), we get a palindrome (259451154952).

The spelling of 213140113640 in words is "two hundred thirteen billion, one hundred forty million, one hundred thirteen thousand, six hundred forty".