64695970142 has 4 divisors (see below), whose sum is σ = 97043955216. Its totient is φ = 32347985070.

The previous prime is 64695970099. The next prime is 64695970147. The reversal of 64695970142 is 24107959646.

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

It is a super-2 number, since 2×64695970142² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64695970147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16173992534 + ... + 16173992537.

It is an arithmetic number, because the mean of its divisors is an integer number (24260988804).

Almost surely, 2^64695970142 is an apocalyptic number.

64695970142 is a deficient number, since it is larger than the sum of its proper divisors (32347985074).

64695970142 is a wasteful number, since it uses less digits than its factorization.

64695970142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32347985073.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 64695970142 in words is "sixty-four billion, six hundred ninety-five million, nine hundred seventy thousand, one hundred forty-two".