45019813861 has 8 divisors (see below), whose sum is σ = 49303626624. Its totient is φ = 40767851520.

The previous prime is 45019813859. The next prime is 45019813873. The reversal of 45019813861 is 16831891054.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45019813861 - 2¹ = 45019813859 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 (45019813561) 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 7 ways as a sum of consecutive naturals, for example, 7959645 + ... + 7965298.

It is an arithmetic number, because the mean of its divisors is an integer number (6162953328).

Almost surely, 2^45019813861 is an apocalyptic number.

It is an amenable number.

45019813861 is a deficient number, since it is larger than the sum of its proper divisors (4283812763).

45019813861 is a wasteful number, since it uses less digits than its factorization.

45019813861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15925211.

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 45019813861 in words is "forty-five billion, nineteen million, eight hundred thirteen thousand, eight hundred sixty-one".