78504081331 has 8 divisors (see below), whose sum is σ = 86604878304. Its totient is φ = 70697858880.

The previous prime is 78504081319. The next prime is 78504081349. The reversal of 78504081331 is 13318040587.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78504081331 is a prime.

It is a super-2 number, since 2×78504081331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78504081361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73643071 + ... + 73644136.

It is an arithmetic number, because the mean of its divisors is an integer number (10825609788).

Almost surely, 2^78504081331 is an apocalyptic number.

78504081331 is a deficient number, since it is larger than the sum of its proper divisors (8100796973).

78504081331 is a wasteful number, since it uses less digits than its factorization.

78504081331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147287261.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 78504081331 in words is "seventy-eight billion, five hundred four million, eighty-one thousand, three hundred thirty-one".