61851104189 has 16 divisors (see below), whose sum is σ = 73771818240. Its totient is φ = 50702319360.

The previous prime is 61851104167. The next prime is 61851104191. The reversal of 61851104189 is 98140115816.

It is not a de Polignac number, because 61851104189 - 2²⁰ = 61850055613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61851104129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1150469 + ... + 1203029.

It is an arithmetic number, because the mean of its divisors is an integer number (4610738640).

Almost surely, 2^61851104189 is an apocalyptic number.

It is an amenable number.

61851104189 is a deficient number, since it is larger than the sum of its proper divisors (11920714051).

61851104189 is a wasteful number, since it uses less digits than its factorization.

61851104189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59900.

The product of its (nonzero) digits is 69120, while the sum is 44.

The spelling of 61851104189 in words is "sixty-one billion, eight hundred fifty-one million, one hundred four thousand, one hundred eighty-nine".