3878422533685 has 16 divisors (see below), whose sum is σ = 5321822418432. Its totient is φ = 2658068265600.

The previous prime is 3878422533679. The next prime is 3878422533697. The reversal of 3878422533685 is 5863352248783.

It is a de Polignac number, because none of the positive numbers 2^k-3878422533685 is a prime.

It is a super-2 number, since 2×3878422533685² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29547576 + ... + 29678545.

It is an arithmetic number, because the mean of its divisors is an integer number (332613901152).

Almost surely, 2^{3878422533685} is an apocalyptic number.

3878422533685 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3878422533685 is a deficient number, since it is larger than the sum of its proper divisors (1443399884747).

3878422533685 is a wasteful number, since it uses less digits than its factorization.

3878422533685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59228004.

The product of its digits is 232243200, while the sum is 64.

The spelling of 3878422533685 in words is "three trillion, eight hundred seventy-eight billion, four hundred twenty-two million, five hundred thirty-three thousand, six hundred eighty-five".