43661149477 has 8 divisors (see below), whose sum is σ = 47631863520. Its totient is φ = 39690688560.

The previous prime is 43661149463. The next prime is 43661149513. The reversal of 43661149477 is 77494116634.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43661149477 - 2²³ = 43652760869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43661149577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 596698 + ... + 665860.

It is an arithmetic number, because the mean of its divisors is an integer number (5953982940).

Almost surely, 2^43661149477 is an apocalyptic number.

It is an amenable number.

43661149477 is a deficient number, since it is larger than the sum of its proper divisors (3970714043).

43661149477 is a wasteful number, since it uses less digits than its factorization.

43661149477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126563.

The product of its digits is 3048192, while the sum is 52.

The spelling of 43661149477 in words is "forty-three billion, six hundred sixty-one million, one hundred forty-nine thousand, four hundred seventy-seven".