44651820465 has 24 divisors (see below), whose sum is σ = 88453130688. Its totient is φ = 20412260640.

The previous prime is 44651820457. The next prime is 44651820481. The reversal of 44651820465 is 56402815644.

It is a happy number.

44651820465 is a `hidden beast` number, since 4 + 4 + 6 + 5 + 182 + 0 + 465 = 666.

It is not a de Polignac number, because 44651820465 - 2³ = 44651820457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 44651820465.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70875591 + ... + 70876220.

It is an arithmetic number, because the mean of its divisors is an integer number (3685547112).

Almost surely, 2^44651820465 is an apocalyptic number.

44651820465 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

44651820465 is a deficient number, since it is larger than the sum of its proper divisors (43801310223).

44651820465 is a wasteful number, since it uses less digits than its factorization.

44651820465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141751829 (or 141751826 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 45.

The spelling of 44651820465 in words is "forty-four billion, six hundred fifty-one million, eight hundred twenty thousand, four hundred sixty-five".