215014201541 has 4 divisors (see below), whose sum is σ = 217230842892. Its totient is φ = 212797560192.

The previous prime is 215014201517. The next prime is 215014201561. The reversal of 215014201541 is 145102410512.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 121885472641 + 93128728900 = 349121^2 + 305170^2 .

It is a cyclic number.

It is not a de Polignac number, because 215014201541 - 2¹⁸ = 215013939397 is a prime.

It is a super-2 number, since 2×215014201541² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 215014201541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215014201511) 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, 1108320530 + ... + 1108320723.

It is an arithmetic number, because the mean of its divisors is an integer number (54307710723).

Almost surely, 2^215014201541 is an apocalyptic number.

It is an amenable number.

215014201541 is a deficient number, since it is larger than the sum of its proper divisors (2216641351).

215014201541 is an equidigital number, since it uses as much as digits as its factorization.

215014201541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216641350.

The product of its (nonzero) digits is 1600, while the sum is 26.

The spelling of 215014201541 in words is "two hundred fifteen billion, fourteen million, two hundred one thousand, five hundred forty-one".