43540000055 has 32 divisors (see below), whose sum is σ = 53818115904. Its totient is φ = 33801005056.

The previous prime is 43540000043. The next prime is 43540000067. The reversal of 43540000055 is 55000004534.

It is an interprime number because it is at equal distance from previous prime (43540000043) and next prime (43540000067).

It is a cyclic number.

It is not a de Polignac number, because 43540000055 - 2⁸ = 43539999799 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43539999979 and 43540000033.

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, 17576477 + ... + 17578953.

It is an arithmetic number, because the mean of its divisors is an integer number (1681816122).

Almost surely, 2^43540000055 is an apocalyptic number.

43540000055 is a deficient number, since it is larger than the sum of its proper divisors (10278115849).

43540000055 is a wasteful number, since it uses less digits than its factorization.

43540000055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3235.

The product of its (nonzero) digits is 6000, while the sum is 26.

Adding to 43540000055 its reverse (55000004534), we get a palindrome (98540004589).

The spelling of 43540000055 in words is "forty-three billion, five hundred forty million, fifty-five", and thus it is an aban number.