78507222258742 has 8 divisors (see below), whose sum is σ = 117763310984976. Its totient is φ = 39252785263752.

The previous prime is 78507222258733. The next prime is 78507222258779. The reversal of 78507222258742 is 24785222270587.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412813978 + ... + 413004109.

It is an arithmetic number, because the mean of its divisors is an integer number (14720413873122).

Almost surely, 2^{78507222258742} is an apocalyptic number.

78507222258742 is a deficient number, since it is larger than the sum of its proper divisors (39256088726234).

78507222258742 is a wasteful number, since it uses less digits than its factorization.

78507222258742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825865622.

The product of its (nonzero) digits is 70246400, while the sum is 61.

The spelling of 78507222258742 in words is "seventy-eight trillion, five hundred seven billion, two hundred twenty-two million, two hundred fifty-eight thousand, seven hundred forty-two".