400540220235 has 24 divisors (see below), whose sum is σ = 695083696944. Its totient is φ = 213370994880.

The previous prime is 400540220233. The next prime is 400540220243. The reversal of 400540220235 is 532022045004.

It is a happy number.

400540220235 is a `hidden beast` number, since 4 + 0 + 0 + 5 + 402 + 20 + 235 = 666.

400540220235 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 400540220235 - 2¹ = 400540220233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400540220199 and 400540220208.

It is not an unprimeable number, because it can be changed into a prime (400540220233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5179021 + ... + 5255790.

It is an arithmetic number, because the mean of its divisors is an integer number (28961820706).

Almost surely, 2^400540220235 is an apocalyptic number.

400540220235 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

400540220235 is a deficient number, since it is larger than the sum of its proper divisors (294543476709).

400540220235 is a wasteful number, since it uses less digits than its factorization.

400540220235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10435675 (or 10435672 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

Adding to 400540220235 its reverse (532022045004), we get a palindrome (932562265239).

The spelling of 400540220235 in words is "four hundred billion, five hundred forty million, two hundred twenty thousand, two hundred thirty-five".