40520202400 has 36 divisors (see below), whose sum is σ = 98919946062. Its totient is φ = 16208080640.

The previous prime is 40520202343. The next prime is 40520202403. The reversal of 40520202400 is 420202504.

It can be written as a sum of positive squares in 3 ways, for example, as 22712901264 + 17807301136 = 150708^2 + 133444^2 .

It is not an unprimeable number, because it can be changed into a prime (40520202403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25324327 + ... + 25325926.

Almost surely, 2^40520202400 is an apocalyptic number.

40520202400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40520202400 is an abundant number, since it is smaller than the sum of its proper divisors (58399743662).

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

40520202400 is a wasteful number, since it uses less digits than its factorization.

40520202400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50650273 (or 50650260 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

Adding to 40520202400 its reverse (420202504), we get a palindrome (40940404904).

The spelling of 40520202400 in words is "forty billion, five hundred twenty million, two hundred two thousand, four hundred".