66010609950 has 24 divisors (see below), whose sum is σ = 163706313048. Its totient is φ = 17602829280.

The previous prime is 66010609949. The next prime is 66010609979. The reversal of 66010609950 is 5990601066.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220035217 + ... + 220035516.

It is an arithmetic number, because the mean of its divisors is an integer number (6821096377).

Almost surely, 2^66010609950 is an apocalyptic number.

66010609950 is an abundant number, since it is smaller than the sum of its proper divisors (97695703098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66010609950 is a wasteful number, since it uses less digits than its factorization.

66010609950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440070748 (or 440070743 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 42.

The spelling of 66010609950 in words is "sixty-six billion, ten million, six hundred nine thousand, nine hundred fifty".