42891337955 has 4 divisors (see below), whose sum is σ = 51469605552. Its totient is φ = 34313070360.

The previous prime is 42891337939. The next prime is 42891337969. The reversal of 42891337955 is 55973319824.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42891337955 - 2⁴ = 42891337939 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42891337955.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4289133791 + ... + 4289133800.

It is an arithmetic number, because the mean of its divisors is an integer number (12867401388).

Almost surely, 2^42891337955 is an apocalyptic number.

42891337955 is a deficient number, since it is larger than the sum of its proper divisors (8578267597).

42891337955 is an equidigital number, since it uses as much as digits as its factorization.

42891337955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8578267596.

The product of its digits is 8164800, while the sum is 56.

The spelling of 42891337955 in words is "forty-two billion, eight hundred ninety-one million, three hundred thirty-seven thousand, nine hundred fifty-five".