403740400400 has 60 divisors (see below), whose sum is σ = 970721864244. Its totient is φ = 161373696000.

The previous prime is 403740400363. The next prime is 403740400463. The reversal of 403740400400 is 4004047304.

It can be written as a sum of positive squares in 6 ways, for example, as 7379497216 + 396360903184 = 85904^2 + 629572^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 403740400400.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146360 + ... + 910440.

Almost surely, 2^403740400400 is an apocalyptic number.

403740400400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403740400400 is an abundant number, since it is smaller than the sum of its proper divisors (566981463844).

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

403740400400 is a wasteful number, since it uses less digits than its factorization.

403740400400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765420 (or 765409 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 26.

Adding to 403740400400 its reverse (4004047304), we get a palindrome (407744447704).

The spelling of 403740400400 in words is "four hundred three billion, seven hundred forty million, four hundred thousand, four hundred".