215556406111041 has 4 divisors (see below), whose sum is σ = 287408541481392. Its totient is φ = 143704270740692.

The previous prime is 215556406111003. The next prime is 215556406111061. The reversal of 215556406111041 is 140111604655512.

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 215556406111041 - 2⁴² = 211158359599937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215556406110984 and 215556406111002.

It is not an unprimeable number, because it can be changed into a prime (215556406111061) 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, 35926067685171 + ... + 35926067685176.

It is an arithmetic number, because the mean of its divisors is an integer number (71852135370348).

Almost surely, 2^{215556406111041} is an apocalyptic number.

It is an amenable number.

215556406111041 is a deficient number, since it is larger than the sum of its proper divisors (71852135370351).

215556406111041 is an equidigital number, since it uses as much as digits as its factorization.

215556406111041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71852135370350.

The product of its (nonzero) digits is 144000, while the sum is 42.

The spelling of 215556406111041 in words is "two hundred fifteen trillion, five hundred fifty-six billion, four hundred six million, one hundred eleven thousand, forty-one".