66979675098 has 48 divisors (see below), whose sum is σ = 166024497600. Its totient is φ = 19117427328.

The previous prime is 66979675097. The next prime is 66979675099. The reversal of 66979675098 is 89057697966.

It is an interprime number because it is at equal distance from previous prime (66979675097) and next prime (66979675099).

It is not an unprimeable number, because it can be changed into a prime (66979675097) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148948 + ... + 395151.

It is an arithmetic number, because the mean of its divisors is an integer number (3458843700).

Almost surely, 2^66979675098 is an apocalyptic number.

66979675098 is an abundant number, since it is smaller than the sum of its proper divisors (99044822502).

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

66979675098 is a wasteful number, since it uses less digits than its factorization.

66979675098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545091 (or 545088 counting only the distinct ones).

The product of its (nonzero) digits is 308629440, while the sum is 72.

The spelling of 66979675098 in words is "sixty-six billion, nine hundred seventy-nine million, six hundred seventy-five thousand, ninety-eight".