215140503001 has 4 divisors (see below), whose sum is σ = 215507012112. Its totient is φ = 214773993892.

The previous prime is 215140502989. The next prime is 215140503023. The reversal of 215140503001 is 100305041512.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 215140503001 - 2³⁷ = 77701549529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215140503401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183253675 + ... + 183254848.

It is an arithmetic number, because the mean of its divisors is an integer number (53876753028).

Almost surely, 2^215140503001 is an apocalyptic number.

It is an amenable number.

215140503001 is a deficient number, since it is larger than the sum of its proper divisors (366509111).

215140503001 is an equidigital number, since it uses as much as digits as its factorization.

215140503001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366509110.

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 215140503001 its reverse (100305041512), we get a palindrome (315445544513).

The spelling of 215140503001 in words is "two hundred fifteen billion, one hundred forty million, five hundred three thousand, one".