76240050221 has 4 divisors (see below), whose sum is σ = 78869017500. Its totient is φ = 73611082944.

The previous prime is 76240050181. The next prime is 76240050223. The reversal of 76240050221 is 12205004267.

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 13107960100 + 63132090121 = 114490^2 + 251261^2 .

It is a cyclic number.

It is not a de Polignac number, because 76240050221 - 2¹⁸ = 76239788077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 2628967249 = 76240050221 / (7 + 6 + 2 + 4 + 0 + 0 + 5 + 0 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76240050223) 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, 1314483596 + ... + 1314483653.

It is an arithmetic number, because the mean of its divisors is an integer number (19717254375).

Almost surely, 2^76240050221 is an apocalyptic number.

It is an amenable number.

76240050221 is a deficient number, since it is larger than the sum of its proper divisors (2628967279).

76240050221 is a wasteful number, since it uses less digits than its factorization.

76240050221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628967278.

The product of its (nonzero) digits is 6720, while the sum is 29.

Adding to 76240050221 its reverse (12205004267), we get a palindrome (88445054488).

The spelling of 76240050221 in words is "seventy-six billion, two hundred forty million, fifty thousand, two hundred twenty-one".