64858550901055 has 8 divisors (see below), whose sum is σ = 78061211412912. Its totient is φ = 51732873833088.

The previous prime is 64858550901049. The next prime is 64858550901071. The reversal of 64858550901055 is 55010905585846.

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 64858550901055 - 2²⁷ = 64858416683327 is a prime.

It is a super-2 number, since 2×64858550901055² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64858550900984 and 64858550901002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19245859117 + ... + 19245862486.

It is an arithmetic number, because the mean of its divisors is an integer number (9757651426614).

Almost surely, 2^{64858550901055} is an apocalyptic number.

64858550901055 is a deficient number, since it is larger than the sum of its proper divisors (13202660511857).

64858550901055 is a wasteful number, since it uses less digits than its factorization.

64858550901055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38491721945.

The product of its (nonzero) digits is 43200000, while the sum is 61.

The spelling of 64858550901055 in words is "sixty-four trillion, eight hundred fifty-eight billion, five hundred fifty million, nine hundred one thousand, fifty-five".