54786181690 has 16 divisors (see below), whose sum is σ = 104416017192. Its totient is φ = 20625385984.

The previous prime is 54786181669. The next prime is 54786181711. The reversal of 54786181690 is 9618168745.

It is an interprime number because it is at equal distance from previous prime (54786181669) and next prime (54786181711).

It can be written as a sum of positive squares in 4 ways, for example, as 36363820249 + 18422361441 = 190693^2 + 135729^2 .

It is a super-2 number, since 2×54786181690² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161135659 + ... + 161135998.

Almost surely, 2^54786181690 is an apocalyptic number.

54786181690 is a deficient number, since it is larger than the sum of its proper divisors (49629835502).

54786181690 is a wasteful number, since it uses less digits than its factorization.

54786181690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322271681.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 54786181690 in words is "fifty-four billion, seven hundred eighty-six million, one hundred eighty-one thousand, six hundred ninety".