400036318380 has 120 divisors (see below), whose sum is σ = 1328748176448. Its totient is φ = 100401265152.

The previous prime is 400036318369. The next prime is 400036318411. The reversal of 400036318380 is 83813630004.

It is a happy number.

400036318380 is a `hidden beast` number, since 40 + 0 + 0 + 363 + 183 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 7235284 + ... + 7290363.

Almost surely, 2^400036318380 is an apocalyptic number.

It is an amenable number.

400036318380 is an abundant number, since it is smaller than the sum of its proper divisors (928711858068).

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

400036318380 is a wasteful number, since it uses less digits than its factorization.

400036318380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14525685 (or 14525674 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

Adding to 400036318380 its reverse (83813630004), we get a palindrome (483849948384).

The spelling of 400036318380 in words is "four hundred billion, thirty-six million, three hundred eighteen thousand, three hundred eighty".