78535481631422 has 4 divisors (see below), whose sum is σ = 117803222447136. Its totient is φ = 39267740815710.

The previous prime is 78535481631391. The next prime is 78535481631491. The reversal of 78535481631422 is 22413618453587.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19633870407854 + ... + 19633870407857.

It is an arithmetic number, because the mean of its divisors is an integer number (29450805611784).

Almost surely, 2^{78535481631422} is an apocalyptic number.

78535481631422 is a deficient number, since it is larger than the sum of its proper divisors (39267740815714).

78535481631422 is a wasteful number, since it uses less digits than its factorization.

78535481631422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39267740815713.

The product of its digits is 38707200, while the sum is 59.

The spelling of 78535481631422 in words is "seventy-eight trillion, five hundred thirty-five billion, four hundred eighty-one million, six hundred thirty-one thousand, four hundred twenty-two".