78704220415 has 8 divisors (see below), whose sum is σ = 97701791040. Its totient is φ = 60792225312.

The previous prime is 78704220409. The next prime is 78704220443. The reversal of 78704220415 is 51402240787.

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 78704220415 - 2⁹ = 78704219903 is a prime.

It is a super-2 number, since 2×78704220415² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 271393719 + ... + 271394008.

It is an arithmetic number, because the mean of its divisors is an integer number (12212723880).

Almost surely, 2^78704220415 is an apocalyptic number.

78704220415 is a deficient number, since it is larger than the sum of its proper divisors (18997570625).

78704220415 is a wasteful number, since it uses less digits than its factorization.

78704220415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542787761.

The product of its (nonzero) digits is 125440, while the sum is 40.

The spelling of 78704220415 in words is "seventy-eight billion, seven hundred four million, two hundred twenty thousand, four hundred fifteen".