76134013421 has 4 divisors (see below), whose sum is σ = 76172139612. Its totient is φ = 76095887232.

The previous prime is 76134013411. The next prime is 76134013451. The reversal of 76134013421 is 12431043167.

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 29676952900 + 46457060521 = 172270^2 + 215539^2 .

It is a cyclic number.

It is not a de Polignac number, because 76134013421 - 2¹⁰ = 76134012397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76134013411) 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, 19060100 + ... + 19064093.

It is an arithmetic number, because the mean of its divisors is an integer number (19043034903).

Almost surely, 2^76134013421 is an apocalyptic number.

It is an amenable number.

76134013421 is a deficient number, since it is larger than the sum of its proper divisors (38126191).

76134013421 is a wasteful number, since it uses less digits than its factorization.

76134013421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38126190.

The product of its (nonzero) digits is 12096, while the sum is 32.

Adding to 76134013421 its reverse (12431043167), we get a palindrome (88565056588).

The spelling of 76134013421 in words is "seventy-six billion, one hundred thirty-four million, thirteen thousand, four hundred twenty-one".