40215423044 has 12 divisors (see below), whose sum is σ = 70378596204. Its totient is φ = 20107252704.

The previous prime is 40215423013. The next prime is 40215423067. The reversal of 40215423044 is 44032451204.

It can be written as a sum of positive squares in 2 ways, for example, as 12230148100 + 27985274944 = 110590^2 + 167288^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40215422998 and 40215423016.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150782 + ... + 321194.

It is an arithmetic number, because the mean of its divisors is an integer number (5864883017).

Almost surely, 2^40215423044 is an apocalyptic number.

It is an amenable number.

40215423044 is a deficient number, since it is larger than the sum of its proper divisors (30163173160).

40215423044 is a wasteful number, since it uses less digits than its factorization.

40215423044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229414 (or 229412 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 40215423044 its reverse (44032451204), we get a palindrome (84247874248).

The spelling of 40215423044 in words is "forty billion, two hundred fifteen million, four hundred twenty-three thousand, forty-four".