64543502054 has 32 divisors (see below), whose sum is σ = 97917857856. Its totient is φ = 31906949760.

The previous prime is 64543502053. The next prime is 64543502057. The reversal of 64543502054 is 45020534546.

It is a junction number, because it is equal to n+sod(n) for n = 64543501999 and 64543502017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64543502053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85261844 + ... + 85262600.

It is an arithmetic number, because the mean of its divisors is an integer number (3059933058).

Almost surely, 2^64543502054 is an apocalyptic number.

64543502054 is a deficient number, since it is larger than the sum of its proper divisors (33374355802).

64543502054 is a wasteful number, since it uses less digits than its factorization.

64543502054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000.

The product of its (nonzero) digits is 288000, while the sum is 38.

The spelling of 64543502054 in words is "sixty-four billion, five hundred forty-three million, five hundred two thousand, fifty-four".