78342550481 has 8 divisors (see below), whose sum is σ = 88037113920. Its totient is φ = 69172017552.

The previous prime is 78342550471. The next prime is 78342550493. The reversal of 78342550481 is 18405524387.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78342550481 - 2¹⁸ = 78342288337 is a prime.

It is a super-2 number, since 2×78342550481² (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 (78342550441) 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, 131007311 + ... + 131007908.

It is an arithmetic number, because the mean of its divisors is an integer number (11004639240).

Almost surely, 2^78342550481 is an apocalyptic number.

It is an amenable number.

78342550481 is a deficient number, since it is larger than the sum of its proper divisors (9694563439).

78342550481 is a wasteful number, since it uses less digits than its factorization.

78342550481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262015255.

The product of its (nonzero) digits is 1075200, while the sum is 47.

The spelling of 78342550481 in words is "seventy-eight billion, three hundred forty-two million, five hundred fifty thousand, four hundred eighty-one".