3661220266456 has 8 divisors (see below), whose sum is σ = 6864787999620. Its totient is φ = 1830610133224.

The previous prime is 3661220266447. The next prime is 3661220266469. The reversal of 3661220266456 is 6546620221663.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228826266646 + ... + 228826266661.

Almost surely, 2^{3661220266456} is an apocalyptic number.

It is an amenable number.

3661220266456 is a deficient number, since it is larger than the sum of its proper divisors (3203567733164).

3661220266456 is a wasteful number, since it uses less digits than its factorization.

3661220266456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457652533313 (or 457652533309 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 49.

The spelling of 3661220266456 in words is "three trillion, six hundred sixty-one billion, two hundred twenty million, two hundred sixty-six thousand, four hundred fifty-six".