64406662474501 has 4 divisors (see below), whose sum is σ = 66484296747904. Its totient is φ = 62329028201100.

The previous prime is 64406662474493. The next prime is 64406662474507. The reversal of 64406662474501 is 10547426660446.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64406662474501 - 2³ = 64406662474493 is a prime.

It is a super-2 number, since 2×64406662474501² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64406662474507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1038817136655 + ... + 1038817136716.

It is an arithmetic number, because the mean of its divisors is an integer number (16621074186976).

Almost surely, 2^{64406662474501} is an apocalyptic number.

It is an amenable number.

64406662474501 is a deficient number, since it is larger than the sum of its proper divisors (2077634273403).

64406662474501 is a wasteful number, since it uses less digits than its factorization.

64406662474501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077634273402.

The product of its (nonzero) digits is 23224320, while the sum is 55.

The spelling of 64406662474501 in words is "sixty-four trillion, four hundred six billion, six hundred sixty-two million, four hundred seventy-four thousand, five hundred one".