54644136502 has 4 divisors (see below), whose sum is σ = 81966204756. Its totient is φ = 27322068250.

The previous prime is 54644136499. The next prime is 54644136551. The reversal of 54644136502 is 20563144645.

54644136502 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20563144645 = 5 ⋅4112628929.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13661034124 + ... + 13661034127.

It is an arithmetic number, because the mean of its divisors is an integer number (20491551189).

Almost surely, 2^54644136502 is an apocalyptic number.

54644136502 is a deficient number, since it is larger than the sum of its proper divisors (27322068254).

54644136502 is a wasteful number, since it uses less digits than its factorization.

54644136502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27322068253.

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 54644136502 in words is "fifty-four billion, six hundred forty-four million, one hundred thirty-six thousand, five hundred two".