54649215658 has 4 divisors (see below), whose sum is σ = 81973823490. Its totient is φ = 27324607828.

The previous prime is 54649215653. The next prime is 54649215661. The reversal of 54649215658 is 85651294645.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 52967641609 + 1681574049 = 230147^2 + 41007^2 .

It is a junction number, because it is equal to n+sod(n) for n = 54649215599 and 54649215608.

It is not an unprimeable number, because it can be changed into a prime (54649215653) 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, 13662303913 + ... + 13662303916.

Almost surely, 2^54649215658 is an apocalyptic number.

54649215658 is a deficient number, since it is larger than the sum of its proper divisors (27324607832).

54649215658 is a wasteful number, since it uses less digits than its factorization.

54649215658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27324607831.

The product of its digits is 10368000, while the sum is 55.

The spelling of 54649215658 in words is "fifty-four billion, six hundred forty-nine million, two hundred fifteen thousand, six hundred fifty-eight".