40445015400 has 72 divisors (see below), whose sum is σ = 135827849430. Its totient is φ = 10785336960.

The previous prime is 40445015371. The next prime is 40445015417. The reversal of 40445015400 is 451054404.

It can be written as a sum of positive squares in 3 ways, for example, as 27668330244 + 12776685156 = 166338^2 + 113034^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11232927 + ... + 11236526.

Almost surely, 2^40445015400 is an apocalyptic number.

40445015400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40445015400 is an abundant number, since it is smaller than the sum of its proper divisors (95382834030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40445015400 is a wasteful number, since it uses less digits than its factorization.

40445015400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22469475 (or 22469463 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 40445015400 its reverse (451054404), we get a palindrome (40896069804).

The spelling of 40445015400 in words is "forty billion, four hundred forty-five million, fifteen thousand, four hundred".