215140424445340 has 48 divisors (see below), whose sum is σ = 478373931000000. Its totient is φ = 80993556288512.

The previous prime is 215140424445277. The next prime is 215140424445379. The reversal of 215140424445340 is 43544424041512.

215140424445340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 57604161 + ... + 61225159.

It is an arithmetic number, because the mean of its divisors is an integer number (9966123562500).

Almost surely, 2^{215140424445340} is an apocalyptic number.

215140424445340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215140424445340 is an abundant number, since it is smaller than the sum of its proper divisors (263233506554660).

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

215140424445340 is a wasteful number, since it uses less digits than its factorization.

215140424445340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3795774 (or 3795772 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 43.

Adding to 215140424445340 its reverse (43544424041512), we get a palindrome (258684848486852).

The spelling of 215140424445340 in words is "two hundred fifteen trillion, one hundred forty billion, four hundred twenty-four million, four hundred forty-five thousand, three hundred forty".