43461405121 has 4 divisors (see below), whose sum is σ = 43985036592. Its totient is φ = 42937773652.

The previous prime is 43461405103. The next prime is 43461405173. The reversal of 43461405121 is 12150416434.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43461405121 - 2¹³ = 43461396929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43461405181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261815611 + ... + 261815776.

It is an arithmetic number, because the mean of its divisors is an integer number (10996259148).

Almost surely, 2^43461405121 is an apocalyptic number.

It is an amenable number.

43461405121 is a deficient number, since it is larger than the sum of its proper divisors (523631471).

43461405121 is an equidigital number, since it uses as much as digits as its factorization.

43461405121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523631470.

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 43461405121 in words is "forty-three billion, four hundred sixty-one million, four hundred five thousand, one hundred twenty-one".