78530561315 has 8 divisors (see below), whose sum is σ = 94506694800. Its totient is φ = 62644434912.

The previous prime is 78530561293. The next prime is 78530561321. The reversal of 78530561315 is 51316503587.

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 78530561315 - 2⁶ = 78530561251 is a prime.

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, 22499849 + ... + 22503338.

It is an arithmetic number, because the mean of its divisors is an integer number (11813336850).

Almost surely, 2^78530561315 is an apocalyptic number.

78530561315 is a deficient number, since it is larger than the sum of its proper divisors (15976133485).

78530561315 is a wasteful number, since it uses less digits than its factorization.

78530561315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45003541.

The product of its (nonzero) digits is 378000, while the sum is 44.

The spelling of 78530561315 in words is "seventy-eight billion, five hundred thirty million, five hundred sixty-one thousand, three hundred fifteen".