78327131045 has 8 divisors (see below), whose sum is σ = 94002609696. Its totient is φ = 62655003216.

The previous prime is 78327131023. The next prime is 78327131089. The reversal of 78327131045 is 54013172387.

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 78327131045 - 2⁸ = 78327130789 is a prime.

It is a super-2 number, since 2×78327131045² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78327130993 and 78327131011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785987 + ... + 880016.

It is an arithmetic number, because the mean of its divisors is an integer number (11750326212).

Almost surely, 2^78327131045 is an apocalyptic number.

It is an amenable number.

78327131045 is a deficient number, since it is larger than the sum of its proper divisors (15675478651).

78327131045 is a wasteful number, since it uses less digits than its factorization.

78327131045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675411.

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 78327131045 in words is "seventy-eight billion, three hundred twenty-seven million, one hundred thirty-one thousand, forty-five".