40145361044 has 12 divisors (see below), whose sum is σ = 70256287668. Its totient is φ = 20072136000.

The previous prime is 40145361043. The next prime is 40145361073. The reversal of 40145361044 is 44016354104.

It can be written as a sum of positive squares in 2 ways, for example, as 27935111044 + 12210250000 = 167138^2 + 110500^2 .

It is a super-2 number, since 2×40145361044² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40145361044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40145361043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61694 + ... + 289994.

It is an arithmetic number, because the mean of its divisors is an integer number (5854690639).

Almost surely, 2^40145361044 is an apocalyptic number.

It is an amenable number.

40145361044 is a deficient number, since it is larger than the sum of its proper divisors (30110926624).

40145361044 is a wasteful number, since it uses less digits than its factorization.

40145361044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272266 (or 272264 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The spelling of 40145361044 in words is "forty billion, one hundred forty-five million, three hundred sixty-one thousand, forty-four".