64344546142 has 16 divisors (see below), whose sum is σ = 98975690352. Its totient is φ = 31355896320.

The previous prime is 64344546109. The next prime is 64344546143. The reversal of 64344546142 is 24164544346.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64344546143) 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, 771843 + ... + 851134.

It is an arithmetic number, because the mean of its divisors is an integer number (6185980647).

Almost surely, 2^64344546142 is an apocalyptic number.

64344546142 is a deficient number, since it is larger than the sum of its proper divisors (34631144210).

64344546142 is a wasteful number, since it uses less digits than its factorization.

64344546142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623483.

The product of its digits is 1105920, while the sum is 43.

The spelling of 64344546142 in words is "sixty-four billion, three hundred forty-four million, five hundred forty-six thousand, one hundred forty-two".