64073138650 has 24 divisors (see below), whose sum is σ = 122397015420. Its totient is φ = 24936572160.

The previous prime is 64073138587. The next prime is 64073138693. The reversal of 64073138650 is 5683137046.

It can be written as a sum of positive squares in 6 ways, for example, as 52894940121 + 11178198529 = 229989^2 + 105727^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64073138597 and 64073138606.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 17315215 + ... + 17318914.

Almost surely, 2^64073138650 is an apocalyptic number.

64073138650 is a deficient number, since it is larger than the sum of its proper divisors (58323876770).

64073138650 is a wasteful number, since it uses less digits than its factorization.

64073138650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34634178 (or 34634173 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 64073138650 in words is "sixty-four billion, seventy-three million, one hundred thirty-eight thousand, six hundred fifty".