64049120858 has 4 divisors (see below), whose sum is σ = 96073681290. Its totient is φ = 32024560428.

The previous prime is 64049120857. The next prime is 64049120869. The reversal of 64049120858 is 85802194046.

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

It can be written as a sum of positive squares in only one way, i.e., 60165712369 + 3883408489 = 245287^2 + 62317^2 .

It is not an unprimeable number, because it can be changed into a prime (64049120857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16012280213 + ... + 16012280216.

Almost surely, 2^64049120858 is an apocalyptic number.

64049120858 is a deficient number, since it is larger than the sum of its proper divisors (32024560432).

64049120858 is a wasteful number, since it uses less digits than its factorization.

64049120858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32024560431.

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 64049120858 in words is "sixty-four billion, forty-nine million, one hundred twenty thousand, eight hundred fifty-eight".