76550397437 has 4 divisors (see below), whose sum is σ = 76769739900. Its totient is φ = 76331054976.

The previous prime is 76550397419. The next prime is 76550397463. The reversal of 76550397437 is 73479305567.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73479305567 = 479 ⋅153401473.

It can be written as a sum of positive squares in 2 ways, for example, as 70217580196 + 6332817241 = 264986^2 + 79579^2 .

It is a cyclic number.

It is not a de Polignac number, because 76550397437 - 2¹⁰ = 76550396413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76550390437) 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, 109670708 + ... + 109671405.

It is an arithmetic number, because the mean of its divisors is an integer number (19192434975).

Almost surely, 2^76550397437 is an apocalyptic number.

It is an amenable number.

76550397437 is a deficient number, since it is larger than the sum of its proper divisors (219342463).

76550397437 is a wasteful number, since it uses less digits than its factorization.

76550397437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219342462.

The product of its (nonzero) digits is 16669800, while the sum is 56.

The spelling of 76550397437 in words is "seventy-six billion, five hundred fifty million, three hundred ninety-seven thousand, four hundred thirty-seven".