64123051553 has 32 divisors (see below), whose sum is σ = 74731714560. Its totient is φ = 54374656000.

The previous prime is 64123051537. The next prime is 64123051589. The reversal of 64123051553 is 35515032146.

It is a cyclic number.

It is not a de Polignac number, because 64123051553 - 2⁴ = 64123051537 is a prime.

It is a super-2 number, since 2×64123051553² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64123051453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10033283 + ... + 10039671.

It is an arithmetic number, because the mean of its divisors is an integer number (2335366080).

Almost surely, 2^64123051553 is an apocalyptic number.

It is an amenable number.

64123051553 is a deficient number, since it is larger than the sum of its proper divisors (10608663007).

64123051553 is a wasteful number, since it uses less digits than its factorization.

64123051553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6889.

The product of its (nonzero) digits is 54000, while the sum is 35.

Adding to 64123051553 its reverse (35515032146), we get a palindrome (99638083699).

The spelling of 64123051553 in words is "sixty-four billion, one hundred twenty-three million, fifty-one thousand, five hundred fifty-three".