65650961590 has 32 divisors (see below), whose sum is σ = 127785216384. Its totient is φ = 24189788160.

The previous prime is 65650961557. The next prime is 65650961659. The reversal of 65650961590 is 9516905656.

65650961590 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4100331 + ... + 4116310.

It is an arithmetic number, because the mean of its divisors is an integer number (3993288012).

Almost surely, 2^65650961590 is an apocalyptic number.

65650961590 is a deficient number, since it is larger than the sum of its proper divisors (62134254794).

65650961590 is a wasteful number, since it uses less digits than its factorization.

65650961590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8216712.

The product of its (nonzero) digits is 2187000, while the sum is 52.

The spelling of 65650961590 in words is "sixty-five billion, six hundred fifty million, nine hundred sixty-one thousand, five hundred ninety".