78535478767325 has 48 divisors (see below), whose sum is σ = 100103310478080. Its totient is φ = 61076973957120.

The previous prime is 78535478767301. The next prime is 78535478767331. The reversal of 78535478767325 is 52376787453587.

It is not a de Polignac number, because 78535478767325 - 2¹⁶ = 78535478701789 is a prime.

It is a super-3 number, since 3×78535478767325³ (a number of 43 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7716952637 + ... + 7716962813.

It is an arithmetic number, because the mean of its divisors is an integer number (2085485634960).

Almost surely, 2^{78535478767325} is an apocalyptic number.

It is an amenable number.

78535478767325 is a deficient number, since it is larger than the sum of its proper divisors (21567831710755).

78535478767325 is a wasteful number, since it uses less digits than its factorization.

78535478767325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16686 (or 16681 counting only the distinct ones).

The product of its digits is 8297856000, while the sum is 77.

The spelling of 78535478767325 in words is "seventy-eight trillion, five hundred thirty-five billion, four hundred seventy-eight million, seven hundred sixty-seven thousand, three hundred twenty-five".