78575332555 has 4 divisors (see below), whose sum is σ = 94290399072. Its totient is φ = 62860266040.

The previous prime is 78575332553. The next prime is 78575332573. The reversal of 78575332555 is 55523357587.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55523357587 = 89849 ⋅617963.

It is not a de Polignac number, because 78575332555 - 2¹ = 78575332553 is a prime.

It is a super-2 number, since 2×78575332555² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78575332496 and 78575332505.

It is not an unprimeable number, because it can be changed into a prime (78575332553) 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 3 ways as a sum of consecutive naturals, for example, 7857533251 + ... + 7857533260.

It is an arithmetic number, because the mean of its divisors is an integer number (23572599768).

Almost surely, 2^78575332555 is an apocalyptic number.

78575332555 is a deficient number, since it is larger than the sum of its proper divisors (15715066517).

78575332555 is a wasteful number, since it uses less digits than its factorization.

78575332555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15715066516.

The product of its digits is 22050000, while the sum is 55.

The spelling of 78575332555 in words is "seventy-eight billion, five hundred seventy-five million, three hundred thirty-two thousand, five hundred fifty-five".