64466054052421 has 16 divisors (see below), whose sum is σ = 78476464555776. Its totient is φ = 51694813921536.

The previous prime is 64466054052373. The next prime is 64466054052469. The reversal of 64466054052421 is 12425045066446.

It is an interprime number because it is at equal distance from previous prime (64466054052373) and next prime (64466054052469).

It is a cyclic number.

It is not a de Polignac number, because 64466054052421 - 2²¹ = 64466051955269 is a prime.

It is a super-2 number, since 2×64466054052421² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64466054052221) 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, 1621930866 + ... + 1621970611.

It is an arithmetic number, because the mean of its divisors is an integer number (4904779034736).

Almost surely, 2^{64466054052421} is an apocalyptic number.

It is an amenable number.

64466054052421 is a deficient number, since it is larger than the sum of its proper divisors (14010410503355).

64466054052421 is a wasteful number, since it uses less digits than its factorization.

64466054052421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3243901668.

The product of its (nonzero) digits is 5529600, while the sum is 49.

The spelling of 64466054052421 in words is "sixty-four trillion, four hundred sixty-six billion, fifty-four million, fifty-two thousand, four hundred twenty-one".