3661734978048 has 160 divisors (see below), whose sum is σ = 11156221384704. Its totient is φ = 1045501857792.

The previous prime is 3661734977977. The next prime is 3661734978131. The reversal of 3661734978048 is 8408794371663.

It is a self number, because there is not a number n which added to its sum of digits gives 3661734978048.

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, 15873711 + ... + 16102737.

Almost surely, 2^{3661734978048} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3661734978048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5578110692352).

3661734978048 is an abundant number, since it is smaller than the sum of its proper divisors (7494486406656).

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

3661734978048 is a wasteful number, since it uses less digits than its factorization.

3661734978048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230542 (or 230526 counting only the distinct ones).

The product of its (nonzero) digits is 146313216, while the sum is 66.

The spelling of 3661734978048 in words is "three trillion, six hundred sixty-one billion, seven hundred thirty-four million, nine hundred seventy-eight thousand, forty-eight".