64021054336651 has 8 divisors (see below), whose sum is σ = 65083709891520. Its totient is φ = 62964705343488.

The previous prime is 64021054336583. The next prime is 64021054336667. The reversal of 64021054336651 is 15663345012046.

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

It is a cyclic number.

It is not a de Polignac number, because 64021054336651 - 2¹⁹ = 64021053812363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64021054336051) 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, 1576619956 + ... + 1576660561.

It is an arithmetic number, because the mean of its divisors is an integer number (8135463736440).

Almost surely, 2^{64021054336651} is an apocalyptic number.

64021054336651 is a deficient number, since it is larger than the sum of its proper divisors (1062655554869).

64021054336651 is a wasteful number, since it uses less digits than its factorization.

64021054336651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3153280853.

The product of its (nonzero) digits is 1555200, while the sum is 46.

Adding to 64021054336651 its reverse (15663345012046), we get a palindrome (79684399348697).

The spelling of 64021054336651 in words is "sixty-four trillion, twenty-one billion, fifty-four million, three hundred thirty-six thousand, six hundred fifty-one".