400020651203 has 8 divisors (see below), whose sum is σ = 400474368000. Its totient is φ = 399567037320.

The previous prime is 400020651161. The next prime is 400020651223. The reversal of 400020651203 is 302156020004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400020651203 - 2¹² = 400020647107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400020651223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9857048 + ... + 9897546.

It is an arithmetic number, because the mean of its divisors is an integer number (50059296000).

Almost surely, 2^400020651203 is an apocalyptic number.

400020651203 is a deficient number, since it is larger than the sum of its proper divisors (453716797).

400020651203 is an equidigital number, since it uses as much as digits as its factorization.

400020651203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51457.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 400020651203 its reverse (302156020004), we get a palindrome (702176671207).

The spelling of 400020651203 in words is "four hundred billion, twenty million, six hundred fifty-one thousand, two hundred three".