878223401011 has 4 divisors (see below), whose sum is σ = 958061892024. Its totient is φ = 798384910000.

The previous prime is 878223400927. The next prime is 878223401017. The reversal of 878223401011 is 110104322878.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 878223401011 - 2²³ = 878215012403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (878223401017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39919245490 + ... + 39919245511.

It is an arithmetic number, because the mean of its divisors is an integer number (239515473006).

Almost surely, 2^878223401011 is an apocalyptic number.

878223401011 is a deficient number, since it is larger than the sum of its proper divisors (79838491013).

878223401011 is a wasteful number, since it uses less digits than its factorization.

878223401011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79838491012.

The product of its (nonzero) digits is 21504, while the sum is 37.

Adding to 878223401011 its reverse (110104322878), we get a palindrome (988327723889).

The spelling of 878223401011 in words is "eight hundred seventy-eight billion, two hundred twenty-three million, four hundred one thousand, eleven".