64255103021 has 8 divisors (see below), whose sum is σ = 65164814784. Its totient is φ = 63345522240.

The previous prime is 64255102993. The next prime is 64255103023. The reversal of 64255103021 is 12030155246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64255103021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64255103023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1387781 + ... + 1433333.

It is an arithmetic number, because the mean of its divisors is an integer number (8145601848).

Almost surely, 2^64255103021 is an apocalyptic number.

It is an amenable number.

64255103021 is a deficient number, since it is larger than the sum of its proper divisors (909711763).

64255103021 is a wasteful number, since it uses less digits than its factorization.

64255103021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65491.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 64255103021 its reverse (12030155246), we get a palindrome (76285258267).

The spelling of 64255103021 in words is "sixty-four billion, two hundred fifty-five million, one hundred three thousand, twenty-one".