64706602147444 has 6 divisors (see below), whose sum is σ = 113236553758034. Its totient is φ = 32353301073720.

The previous prime is 64706602147417. The next prime is 64706602147471. The reversal of 64706602147444 is 44474120660746.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (64706602147417) and next prime (64706602147471).

It can be written as a sum of positive squares in only one way, i.e., 45267867859600 + 19438734287844 = 6728140^2 + 4408938^2 .

It is a super-2 number, since 2×64706602147444² (a number of 28 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, 8088325268427 + ... + 8088325268434.

Almost surely, 2^{64706602147444} is an apocalyptic number.

It is an amenable number.

64706602147444 is a deficient number, since it is larger than the sum of its proper divisors (48529951610590).

64706602147444 is a wasteful number, since it uses less digits than its factorization.

64706602147444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16176650536865 (or 16176650536863 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 55.

The spelling of 64706602147444 in words is "sixty-four trillion, seven hundred six billion, six hundred two million, one hundred forty-seven thousand, four hundred forty-four".