1965579250064 has 20 divisors (see below), whose sum is σ = 3808446545904. Its totient is φ = 982754335008.

The previous prime is 1965579250021. The next prime is 1965579250109. The reversal of 1965579250064 is 4600529755691.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1965579249985 and 1965579250012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1743182 + ... + 2640045.

Almost surely, 2^{1965579250064} is an apocalyptic number.

It is an amenable number.

1965579250064 is a deficient number, since it is larger than the sum of its proper divisors (1842867295840).

1965579250064 is a wasteful number, since it uses less digits than its factorization.

1965579250064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4411262 (or 4411256 counting only the distinct ones).

The product of its (nonzero) digits is 20412000, while the sum is 59.

The spelling of 1965579250064 in words is "one trillion, nine hundred sixty-five billion, five hundred seventy-nine million, two hundred fifty thousand, sixty-four".