400505601430201 has 4 divisors (see below), whose sum is σ = 400507031561472. Its totient is φ = 400504171298932.

The previous prime is 400505601430199. The next prime is 400505601430229. The reversal of 400505601430201 is 102034106505004.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 400505601430201 - 2¹ = 400505601430199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400505601430801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714645481 + ... + 715205686.

It is an arithmetic number, because the mean of its divisors is an integer number (100126757890368).

Almost surely, 2^{400505601430201} is an apocalyptic number.

It is an amenable number.

400505601430201 is a deficient number, since it is larger than the sum of its proper divisors (1430131271).

400505601430201 is a wasteful number, since it uses less digits than its factorization.

400505601430201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430131270.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 400505601430201 its reverse (102034106505004), we get a palindrome (502539707935205).

The spelling of 400505601430201 in words is "four hundred trillion, five hundred five billion, six hundred one million, four hundred thirty thousand, two hundred one".