4661561455 has 32 divisors (see below), whose sum is σ = 5922201600. Its totient is φ = 3515373312.

The previous prime is 4661561447. The next prime is 4661561533. The reversal of 4661561455 is 5541651664.

It is a cyclic number.

It is not a de Polignac number, because 4661561455 - 2³ = 4661561447 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4287922 + ... + 4289008.

It is an arithmetic number, because the mean of its divisors is an integer number (185068800).

Almost surely, 2^4661561455 is an apocalyptic number.

4661561455 is a deficient number, since it is larger than the sum of its proper divisors (1260640145).

4661561455 is a wasteful number, since it uses less digits than its factorization.

4661561455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623.

The product of its digits is 432000, while the sum is 43.

The square root of 4661561455 is about 68275.6285580733. The cubic root of 4661561455 is about 1670.4897096115.

The spelling of 4661561455 in words is "four billion, six hundred sixty-one million, five hundred sixty-one thousand, four hundred fifty-five".