66910098225730 has 8 divisors (see below), whose sum is σ = 120438176806332. Its totient is φ = 26764039290288.

The previous prime is 66910098225673. The next prime is 66910098225749. The reversal of 66910098225730 is 3752289001966.

It can be written as a sum of positive squares in 2 ways, for example, as 55507461810889 + 11402636414841 = 7450333^2 + 3376779^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×66910098225730² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3345504911277 + ... + 3345504911296.

Almost surely, 2^{66910098225730} is an apocalyptic number.

66910098225730 is a deficient number, since it is larger than the sum of its proper divisors (53528078580602).

66910098225730 is a wasteful number, since it uses less digits than its factorization.

66910098225730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6691009822580.

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 66910098225730 in words is "sixty-six trillion, nine hundred ten billion, ninety-eight million, two hundred twenty-five thousand, seven hundred thirty".