78480434594 has 4 divisors (see below), whose sum is σ = 117720651894. Its totient is φ = 39240217296.

The previous prime is 78480434573. The next prime is 78480434603. The reversal of 78480434594 is 49543408487.

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 only one way, i.e., 68284483969 + 10195950625 = 261313^2 + 100975^2 .

It is a super-2 number, since 2×78480434594² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19620108647 + ... + 19620108650.

Almost surely, 2^78480434594 is an apocalyptic number.

78480434594 is a deficient number, since it is larger than the sum of its proper divisors (39240217300).

78480434594 is a wasteful number, since it uses less digits than its factorization.

78480434594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39240217299.

The product of its (nonzero) digits is 15482880, while the sum is 56.

The spelling of 78480434594 in words is "seventy-eight billion, four hundred eighty million, four hundred thirty-four thousand, five hundred ninety-four".