3661261424 has 20 divisors (see below), whose sum is σ = 7096123944. Its totient is φ = 1830003648.

The previous prime is 3661261379. The next prime is 3661261433. The reversal of 3661261424 is 4241621663.

3661261424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10919 + ... + 86265.

Almost surely, 2^3661261424 is an apocalyptic number.

It is an amenable number.

3661261424 is a deficient number, since it is larger than the sum of its proper divisors (3434862520).

3661261424 is a wasteful number, since it uses less digits than its factorization.

3661261424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78392 (or 78386 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 3661261424 is about 60508.3582986681. The cubic root of 3661261424 is about 1541.2635696930.

The spelling of 3661261424 in words is "three billion, six hundred sixty-one million, two hundred sixty-one thousand, four hundred twenty-four".