3474727978646 has 16 divisors (see below), whose sum is σ = 5230165783920. Its totient is φ = 1731341757600.

The previous prime is 3474727978639. The next prime is 3474727978697. The reversal of 3474727978646 is 6468797274743.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2349596 + ... + 3531296.

It is an arithmetic number, because the mean of its divisors is an integer number (326885361495).

Almost surely, 2^{3474727978646} is an apocalyptic number.

3474727978646 is a deficient number, since it is larger than the sum of its proper divisors (1755437805274).

3474727978646 is a wasteful number, since it uses less digits than its factorization.

3474727978646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186799.

The product of its digits is 2389782528, while the sum is 74.

The spelling of 3474727978646 in words is "three trillion, four hundred seventy-four billion, seven hundred twenty-seven million, nine hundred seventy-eight thousand, six hundred forty-six".