43215505454 has 16 divisors (see below), whose sum is σ = 70722063360. Its totient is φ = 19641805560.

The previous prime is 43215505451. The next prime is 43215505499. The reversal of 43215505454 is 45450551234.

It is a super-2 number, since 2×43215505454² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43215505451) 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, 219827 + ... + 367089.

It is an arithmetic number, because the mean of its divisors is an integer number (4420128960).

Almost surely, 2^43215505454 is an apocalyptic number.

43215505454 is a deficient number, since it is larger than the sum of its proper divisors (27506557906).

43215505454 is a wasteful number, since it uses less digits than its factorization.

43215505454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160615.

The product of its (nonzero) digits is 240000, while the sum is 38.

The spelling of 43215505454 in words is "forty-three billion, two hundred fifteen million, five hundred five thousand, four hundred fifty-four".