400260808000 has 56 divisors (see below), whose sum is σ = 991245910824. Its totient is φ = 160104320000.

The previous prime is 400260807967. The next prime is 400260808009. The reversal of 400260808000 is 808062004.

It can be written as a sum of positive squares in 4 ways, for example, as 21533801536 + 378727006464 = 146744^2 + 615408^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 400260808000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400260808009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25008301 + ... + 25024300.

Almost surely, 2^400260808000 is an apocalyptic number.

400260808000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400260808000 is an abundant number, since it is smaller than the sum of its proper divisors (590985102824).

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

400260808000 is an equidigital number, since it uses as much as digits as its factorization.

400260808000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50032628 (or 50032608 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The spelling of 400260808000 in words is "four hundred billion, two hundred sixty million, eight hundred eight thousand".