878142684413 has 4 divisors (see below), whose sum is σ = 879748064640. Its totient is φ = 876537304188.

The previous prime is 878142684401. The next prime is 878142684431. The reversal of 878142684413 is 314486241878.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 878142684413 - 2²² = 878138490109 is a prime.

It is a super-2 number, since 2×878142684413² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878142684613) 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, 802689293 + ... + 802690386.

It is an arithmetic number, because the mean of its divisors is an integer number (219937016160).

Almost surely, 2^878142684413 is an apocalyptic number.

It is an amenable number.

878142684413 is a deficient number, since it is larger than the sum of its proper divisors (1605380227).

878142684413 is a wasteful number, since it uses less digits than its factorization.

878142684413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605380226.

The product of its digits is 8257536, while the sum is 56.

The spelling of 878142684413 in words is "eight hundred seventy-eight billion, one hundred forty-two million, six hundred eighty-four thousand, four hundred thirteen".