78183187643355 has 32 divisors (see below), whose sum is σ = 127332039695616. Its totient is φ = 40957194808704.

The previous prime is 78183187643317. The next prime is 78183187643401. The reversal of 78183187643355 is 55334678138187.

It is not a de Polignac number, because 78183187643355 - 2⁶ = 78183187643291 is a prime.

It is a super-2 number, since 2×78183187643355² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78183187643355.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 181280977 + ... + 181711746.

It is an arithmetic number, because the mean of its divisors is an integer number (3979126240488).

Almost surely, 2^{78183187643355} is an apocalyptic number.

78183187643355 is a deficient number, since it is larger than the sum of its proper divisors (49148852052261).

78183187643355 is a wasteful number, since it uses less digits than its factorization.

78183187643355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362992987.

The product of its digits is 406425600, while the sum is 69.

The spelling of 78183187643355 in words is "seventy-eight trillion, one hundred eighty-three billion, one hundred eighty-seven million, six hundred forty-three thousand, three hundred fifty-five".