66098226937680 has 120 divisors (see below), whose sum is σ = 253691290075392. Its totient is φ = 15108166156032.

The previous prime is 66098226937649. The next prime is 66098226937703. The reversal of 66098226937680 is 8673962289066.

66098226937680 is a `hidden beast` number, since 6 + 609 + 8 + 2 + 2 + 6 + 9 + 3 + 7 + 6 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 66098226937599 and 66098226937608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6557358744 + ... + 6557368823.

Almost surely, 2^{66098226937680} is an apocalyptic number.

66098226937680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66098226937680 is an abundant number, since it is smaller than the sum of its proper divisors (187593063137712).

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

66098226937680 is a wasteful number, since it uses less digits than its factorization.

66098226937680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13114727593 (or 13114727584 counting only the distinct ones).

The product of its (nonzero) digits is 564350976, while the sum is 72.

The spelling of 66098226937680 in words is "sixty-six trillion, ninety-eight billion, two hundred twenty-six million, nine hundred thirty-seven thousand, six hundred eighty".