44491186978 has 32 divisors (see below), whose sum is σ = 77325811200. Its totient is φ = 18804412224.

The previous prime is 44491186933. The next prime is 44491186979. The reversal of 44491186978 is 87968119444.

It is a super-2 number, since 2×44491186978² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (44491186979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 947028 + ... + 992896.

It is an arithmetic number, because the mean of its divisors is an integer number (2416431600).

Almost surely, 2^44491186978 is an apocalyptic number.

44491186978 is a deficient number, since it is larger than the sum of its proper divisors (32834624222).

44491186978 is a wasteful number, since it uses less digits than its factorization.

44491186978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46834.

The product of its digits is 13934592, while the sum is 61.

The spelling of 44491186978 in words is "forty-four billion, four hundred ninety-one million, one hundred eighty-six thousand, nine hundred seventy-eight".