400536134430 has 32 divisors (see below), whose sum is σ = 962063923104. Its totient is φ = 106723280256.

The previous prime is 400536134417. The next prime is 400536134437. The reversal of 400536134430 is 34431635004.

It is a super-4 number, since 4×400536134430⁴ (a number of 48 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400536134391 and 400536134400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400536134437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5359497 + ... + 5433716.

It is an arithmetic number, because the mean of its divisors is an integer number (30064497597).

Almost surely, 2^400536134430 is an apocalyptic number.

400536134430 is an abundant number, since it is smaller than the sum of its proper divisors (561527788674).

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

400536134430 is a wasteful number, since it uses less digits than its factorization.

400536134430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10794460.

The product of its (nonzero) digits is 51840, while the sum is 33.

Adding to 400536134430 its reverse (34431635004), we get a palindrome (434967769434).

The spelling of 400536134430 in words is "four hundred billion, five hundred thirty-six million, one hundred thirty-four thousand, four hundred thirty".