64346053623 has 4 divisors (see below), whose sum is σ = 85794738168. Its totient is φ = 42897369080.

The previous prime is 64346053621. The next prime is 64346053627. The reversal of 64346053623 is 32635064346.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64346053623 - 2¹ = 64346053621 is a prime.

It is a super-2 number, since 2×64346053623² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64346053621) 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, 10724342268 + ... + 10724342273.

It is an arithmetic number, because the mean of its divisors is an integer number (21448684542).

Almost surely, 2^64346053623 is an apocalyptic number.

64346053623 is a deficient number, since it is larger than the sum of its proper divisors (21448684545).

64346053623 is a wasteful number, since it uses less digits than its factorization.

64346053623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21448684544.

The product of its (nonzero) digits is 933120, while the sum is 42.

The spelling of 64346053623 in words is "sixty-four billion, three hundred forty-six million, fifty-three thousand, six hundred twenty-three".