78469315477 has 8 divisors (see below), whose sum is σ = 89706411392. Its totient is φ = 67239018000.

The previous prime is 78469315459. The next prime is 78469315501. The reversal of 78469315477 is 77451396487.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78469315477 - 2¹⁵ = 78469282709 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 (78469315447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1674849 + ... + 1721062.

It is an arithmetic number, because the mean of its divisors is an integer number (11213301424).

Almost surely, 2^78469315477 is an apocalyptic number.

It is an amenable number.

78469315477 is a deficient number, since it is larger than the sum of its proper divisors (11237095915).

78469315477 is a wasteful number, since it uses less digits than its factorization.

78469315477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3399219.

The product of its digits is 35562240, while the sum is 61.

The spelling of 78469315477 in words is "seventy-eight billion, four hundred sixty-nine million, three hundred fifteen thousand, four hundred seventy-seven".