66236051798 has 32 divisors (see below), whose sum is σ = 115853483520. Its totient is φ = 27815296320.

The previous prime is 66236051657. The next prime is 66236051801. The reversal of 66236051798 is 89715063266.

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, 42383 + ... + 366426.

It is an arithmetic number, because the mean of its divisors is an integer number (3620421360).

Almost surely, 2^66236051798 is an apocalyptic number.

66236051798 is a deficient number, since it is larger than the sum of its proper divisors (49617431722).

66236051798 is a wasteful number, since it uses less digits than its factorization.

66236051798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409052.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 66236051798 in words is "sixty-six billion, two hundred thirty-six million, fifty-one thousand, seven hundred ninety-eight".