78019620473 has 8 divisors (see below), whose sum is σ = 78242632776. Its totient is φ = 77796806400.

The previous prime is 78019620451. The next prime is 78019620529. The reversal of 78019620473 is 37402691087.

It can be written as a sum of positive squares in 4 ways, for example, as 1859075689 + 76160544784 = 43117^2 + 275972^2 .

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 78019620473 - 2¹⁰ = 78019619449 is a prime.

It is a super-2 number, since 2×78019620473² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78019620443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757403 + ... + 854223.

It is an arithmetic number, because the mean of its divisors is an integer number (9780329097).

Almost surely, 2^78019620473 is an apocalyptic number.

It is an amenable number.

78019620473 is a deficient number, since it is larger than the sum of its proper divisors (223012303).

78019620473 is a wasteful number, since it uses less digits than its factorization.

78019620473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99115.

The product of its (nonzero) digits is 508032, while the sum is 47.

The spelling of 78019620473 in words is "seventy-eight billion, nineteen million, six hundred twenty thousand, four hundred seventy-three".