52478216329 has 16 divisors (see below), whose sum is σ = 65636449920. Its totient is φ = 40761452160.

The previous prime is 52478216321. The next prime is 52478216333. The reversal of 52478216329 is 92361287425.

It is a happy number.

It is not a de Polignac number, because 52478216329 - 2³ = 52478216321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52478216321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1064614 + ... + 1112815.

It is an arithmetic number, because the mean of its divisors is an integer number (4102278120).

Almost surely, 2^52478216329 is an apocalyptic number.

It is an amenable number.

52478216329 is a deficient number, since it is larger than the sum of its proper divisors (13158233591).

52478216329 is a wasteful number, since it uses less digits than its factorization.

52478216329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177760.

The product of its digits is 1451520, while the sum is 49.

The spelling of 52478216329 in words is "fifty-two billion, four hundred seventy-eight million, two hundred sixteen thousand, three hundred twenty-nine".