64428237513 has 8 divisors (see below), whose sum is σ = 95449240800. Its totient is φ = 42952158324.

The previous prime is 64428237493. The next prime is 64428237541. The reversal of 64428237513 is 31573282446.

64428237513 is a `hidden beast` number, since 64 + 42 + 8 + 2 + 37 + 513 = 666.

It is not a de Polignac number, because 64428237513 - 2¹⁰ = 64428236489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64428237113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1193115483 + ... + 1193115536.

It is an arithmetic number, because the mean of its divisors is an integer number (11931155100).

Almost surely, 2^64428237513 is an apocalyptic number.

It is an amenable number.

64428237513 is a deficient number, since it is larger than the sum of its proper divisors (31021003287).

64428237513 is a wasteful number, since it uses less digits than its factorization.

64428237513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386231028 (or 2386231022 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The spelling of 64428237513 in words is "sixty-four billion, four hundred twenty-eight million, two hundred thirty-seven thousand, five hundred thirteen".