64245966142 has 4 divisors (see below), whose sum is σ = 96368949216. Its totient is φ = 32122983070.

The previous prime is 64245966107. The next prime is 64245966167. The reversal of 64245966142 is 24166954246.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16061491534 + ... + 16061491537.

It is an arithmetic number, because the mean of its divisors is an integer number (24092237304).

Almost surely, 2^64245966142 is an apocalyptic number.

64245966142 is a deficient number, since it is larger than the sum of its proper divisors (32122983074).

64245966142 is a wasteful number, since it uses less digits than its factorization.

64245966142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32122983073.

The product of its digits is 2488320, while the sum is 49.

The spelling of 64245966142 in words is "sixty-four billion, two hundred forty-five million, nine hundred sixty-six thousand, one hundred forty-two".