873555555378 has 64 divisors (see below), whose sum is σ = 1961182347264. Its totient is φ = 257099088000.

The previous prime is 873555555373. The next prime is 873555555407.

873555555378 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (873555555371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120378 + ... + 1327253.

It is an arithmetic number, because the mean of its divisors is an integer number (30643474176).

Almost surely, 2^873555555378 is an apocalyptic number.

873555555378 is an abundant number, since it is smaller than the sum of its proper divisors (1087626791886).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

873555555378 is a wasteful number, since it uses less digits than its factorization.

873555555378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447911.

The product of its digits is 441000000, while the sum is 66.

The spelling of 873555555378 in words is "eight hundred seventy-three billion, five hundred fifty-five million, five hundred fifty-five thousand, three hundred seventy-eight".