78501478471583 has 8 divisors (see below), whose sum is σ = 79137093654528. Its totient is φ = 77866136621784.

The previous prime is 78501478471547. The next prime is 78501478471607. The reversal of 78501478471583 is 38517487410587.

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 78501478471583 - 2¹⁴ = 78501478455199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78501478471783) 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, 67756541 + ... + 68905382.

It is an arithmetic number, because the mean of its divisors is an integer number (9892136706816).

Almost surely, 2^{78501478471583} is an apocalyptic number.

78501478471583 is a deficient number, since it is larger than the sum of its proper divisors (635615182945).

78501478471583 is a wasteful number, since it uses less digits than its factorization.

78501478471583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136666573.

The product of its (nonzero) digits is 210739200, while the sum is 68.

The spelling of 78501478471583 in words is "seventy-eight trillion, five hundred one billion, four hundred seventy-eight million, four hundred seventy-one thousand, five hundred eighty-three".