55742418791 has 4 divisors (see below), whose sum is σ = 55766858784. Its totient is φ = 55717978800.

The previous prime is 55742418779. The next prime is 55742418811. The reversal of 55742418791 is 19781424755.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55742418791 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 (55742418491) 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, 12216575 + ... + 12221136.

It is an arithmetic number, because the mean of its divisors is an integer number (13941714696).

Almost surely, 2^55742418791 is an apocalyptic number.

55742418791 is a deficient number, since it is larger than the sum of its proper divisors (24439993).

55742418791 is a wasteful number, since it uses less digits than its factorization.

55742418791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24439992.

The product of its digits is 2822400, while the sum is 53.

The spelling of 55742418791 in words is "fifty-five billion, seven hundred forty-two million, four hundred eighteen thousand, seven hundred ninety-one".