78183225215854 has 16 divisors (see below), whose sum is σ = 131056581516336. Its totient is φ = 34671053310400.

The previous prime is 78183225215839. The next prime is 78183225215873. The reversal of 78183225215854 is 45851252238187.

It is a super-2 number, since 2×78183225215854² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78183225215792 and 78183225215801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43338815737 + ... + 43338817540.

It is an arithmetic number, because the mean of its divisors is an integer number (8191036344771).

Almost surely, 2^{78183225215854} is an apocalyptic number.

78183225215854 is a deficient number, since it is larger than the sum of its proper divisors (52873356300482).

78183225215854 is a wasteful number, since it uses less digits than its factorization.

78183225215854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86677633331.

The product of its digits is 43008000, while the sum is 61.

The spelling of 78183225215854 in words is "seventy-eight trillion, one hundred eighty-three billion, two hundred twenty-five million, two hundred fifteen thousand, eight hundred fifty-four".