76538612443 has 4 divisors (see below), whose sum is σ = 76542376888. Its totient is φ = 76534848000.

The previous prime is 76538612419. The next prime is 76538612453. The reversal of 76538612443 is 34421683567.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34421683567 = 43 ⋅800504269.

It is a cyclic number.

It is not a de Polignac number, because 76538612443 - 2¹³ = 76538604251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76538612453) 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, 1851558 + ... + 1892443.

It is an arithmetic number, because the mean of its divisors is an integer number (19135594222).

Almost surely, 2^76538612443 is an apocalyptic number.

76538612443 is a deficient number, since it is larger than the sum of its proper divisors (3764445).

76538612443 is a wasteful number, since it uses less digits than its factorization.

76538612443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3764444.

The product of its digits is 2903040, while the sum is 49.

It can be divided in two parts, 7653 and 8612443, that added together give a square (8620096 = 2936²).

The spelling of 76538612443 in words is "seventy-six billion, five hundred thirty-eight million, six hundred twelve thousand, four hundred forty-three".