64106131512212 has 6 divisors (see below), whose sum is σ = 112185730146378. Its totient is φ = 32053065756104.

The previous prime is 64106131512121. The next prime is 64106131512229. The reversal of 64106131512212 is 21221513160146.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 64060110107536 + 46021404676 = 8003756^2 + 214526^2 .

It is a super-2 number, since 2×64106131512212² (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, 8013266439023 + ... + 8013266439030.

It is an arithmetic number, because the mean of its divisors is an integer number (18697621691063).

Almost surely, 2^{64106131512212} is an apocalyptic number.

It is an amenable number.

64106131512212 is a deficient number, since it is larger than the sum of its proper divisors (48079598634166).

64106131512212 is a wasteful number, since it uses less digits than its factorization.

64106131512212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16026532878057 (or 16026532878055 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

Adding to 64106131512212 its reverse (21221513160146), we get a palindrome (85327644672358).

The spelling of 64106131512212 in words is "sixty-four trillion, one hundred six billion, one hundred thirty-one million, five hundred twelve thousand, two hundred twelve".