3722471657478 has 96 divisors (see below), whose sum is σ = 9495275961600. Its totient is φ = 1031691608640.

The previous prime is 3722471657467. The next prime is 3722471657507. The reversal of 3722471657478 is 8747561742273.

3722471657478 is a `hidden beast` number, since 3 + 7 + 2 + 2 + 47 + 16 + 574 + 7 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 336973 + ... + 2749271.

It is an arithmetic number, because the mean of its divisors is an integer number (98909124600).

Almost surely, 2^{3722471657478} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3722471657478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4747637980800).

3722471657478 is an abundant number, since it is smaller than the sum of its proper divisors (5772804304122).

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

3722471657478 is a wasteful number, since it uses less digits than its factorization.

3722471657478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412682 (or 2412679 counting only the distinct ones).

The product of its digits is 110638080, while the sum is 63.

The spelling of 3722471657478 in words is "three trillion, seven hundred twenty-two billion, four hundred seventy-one million, six hundred fifty-seven thousand, four hundred seventy-eight".