64258701049 has 3 divisors (see below), whose sum is σ = 64258954543. Its totient is φ = 64258447556.

The previous prime is 64258701019. The next prime is 64258701079. The reversal of 64258701049 is 94010785246.

The square root of 64258701049 is 253493.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (64258701019) and next prime (64258701079).

It can be written as a sum of positive squares in only one way, i.e., 63768875625 + 489825424 = 252525^2 + 22132^2 .

It is not a de Polignac number, because 64258701049 - 2²⁷ = 64124483321 is a prime.

It is a super-3 number, since 3×64258701049³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64258701019) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 126747 + ... + 380239.

Almost surely, 2^64258701049 is an apocalyptic number.

64258701049 is the 253493-rd square number.

64258701049 is the 126747-th centered octagonal number.

It is an amenable number.

64258701049 is a deficient number, since it is larger than the sum of its proper divisors (253494).

64258701049 is an frugal number, since it uses more digits than its factorization.

64258701049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506986 (or 253493 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 64258701049 in words is "sixty-four billion, two hundred fifty-eight million, seven hundred one thousand, forty-nine".