10554261985 has 4 divisors (see below), whose sum is σ = 12665114388. Its totient is φ = 8443409584.

The previous prime is 10554261973. The next prime is 10554262009. The reversal of 10554261985 is 58916245501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3861876736 + 6692385249 = 62144^2 + 81807^2 .

It is a cyclic number.

It is not a de Polignac number, because 10554261985 - 2¹⁷ = 10554130913 is a prime.

It is a super-2 number, since 2×10554261985² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

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, 1055426194 + ... + 1055426203.

It is an arithmetic number, because the mean of its divisors is an integer number (3166278597).

Almost surely, 2^10554261985 is an apocalyptic number.

It is an amenable number.

10554261985 is a deficient number, since it is larger than the sum of its proper divisors (2110852403).

10554261985 is an equidigital number, since it uses as much as digits as its factorization.

10554261985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110852402.

The product of its (nonzero) digits is 432000, while the sum is 46.

The spelling of 10554261985 in words is "ten billion, five hundred fifty-four million, two hundred sixty-one thousand, nine hundred eighty-five".