64541872474 has 4 divisors (see below), whose sum is σ = 96812808714. Its totient is φ = 32270936236.

The previous prime is 64541872459. The next prime is 64541872489. The reversal of 64541872474 is 47427814546.

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

It is an interprime number because it is at equal distance from previous prime (64541872459) and next prime (64541872489).

It can be written as a sum of positive squares in only one way, i.e., 48777814449 + 15764058025 = 220857^2 + 125555^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16135468117 + ... + 16135468120.

Almost surely, 2^64541872474 is an apocalyptic number.

64541872474 is a deficient number, since it is larger than the sum of its proper divisors (32270936240).

64541872474 is a wasteful number, since it uses less digits than its factorization.

64541872474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32270936239.

The product of its digits is 6021120, while the sum is 52.

The spelling of 64541872474 in words is "sixty-four billion, five hundred forty-one million, eight hundred seventy-two thousand, four hundred seventy-four".