54637318646 has 4 divisors (see below), whose sum is σ = 81955977972. Its totient is φ = 27318659322.

The previous prime is 54637318621. The next prime is 54637318649. The reversal of 54637318646 is 64681373645.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54637318649) by changing a digit.

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 as a sum of consecutive naturals, namely, 13659329660 + ... + 13659329663.

It is an arithmetic number, because the mean of its divisors is an integer number (20488994493).

Almost surely, 2^54637318646 is an apocalyptic number.

54637318646 is a deficient number, since it is larger than the sum of its proper divisors (27318659326).

54637318646 is a wasteful number, since it uses less digits than its factorization.

54637318646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27318659325.

The product of its digits is 8709120, while the sum is 53.

The spelling of 54637318646 in words is "fifty-four billion, six hundred thirty-seven million, three hundred eighteen thousand, six hundred forty-six".