52478738651 has 8 divisors (see below), whose sum is σ = 53856907104. Its totient is φ = 51117275520.

The previous prime is 52478738623. The next prime is 52478738671. The reversal of 52478738651 is 15683787425.

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

It is a cyclic number.

It is not a de Polignac number, because 52478738651 - 2³⁴ = 35298869467 is a prime.

It is a super-2 number, since 2×52478738651² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52478738621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4169966 + ... + 4182531.

It is an arithmetic number, because the mean of its divisors is an integer number (6732113388).

Almost surely, 2^52478738651 is an apocalyptic number.

52478738651 is a deficient number, since it is larger than the sum of its proper divisors (1378168453).

52478738651 is a wasteful number, since it uses less digits than its factorization.

52478738651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8352661.

The product of its digits is 11289600, while the sum is 56.

The spelling of 52478738651 in words is "fifty-two billion, four hundred seventy-eight million, seven hundred thirty-eight thousand, six hundred fifty-one".