78472763122615 has 32 divisors (see below), whose sum is σ = 96181920838080. Its totient is φ = 61445372083200.

The previous prime is 78472763122597. The next prime is 78472763122631. The reversal of 78472763122615 is 51622136727487.

It is not a de Polignac number, because 78472763122615 - 2⁵ = 78472763122583 is a prime.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 367810891 + ... + 368024179.

It is an arithmetic number, because the mean of its divisors is an integer number (3005685026190).

Almost surely, 2^{78472763122615} is an apocalyptic number.

78472763122615 is a deficient number, since it is larger than the sum of its proper divisors (17709157715465).

78472763122615 is a wasteful number, since it uses less digits than its factorization.

78472763122615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219283.

The product of its digits is 47416320, while the sum is 61.

The spelling of 78472763122615 in words is "seventy-eight trillion, four hundred seventy-two billion, seven hundred sixty-three million, one hundred twenty-two thousand, six hundred fifteen".