64935787142 has 4 divisors (see below), whose sum is σ = 97403680716. Its totient is φ = 32467893570.

The previous prime is 64935787129. The next prime is 64935787181. The reversal of 64935787142 is 24178753946.

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

It is a super-2 number, since 2×64935787142² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16233946784 + ... + 16233946787.

It is an arithmetic number, because the mean of its divisors is an integer number (24350920179).

Almost surely, 2^64935787142 is an apocalyptic number.

64935787142 is a deficient number, since it is larger than the sum of its proper divisors (32467893574).

64935787142 is a wasteful number, since it uses less digits than its factorization.

64935787142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32467893573.

The product of its digits is 10160640, while the sum is 56.

The spelling of 64935787142 in words is "sixty-four billion, nine hundred thirty-five million, seven hundred eighty-seven thousand, one hundred forty-two".