401551237642453 has 4 divisors (see below), whose sum is σ = 401560626962880. Its totient is φ = 401541848322028.

The previous prime is 401551237642441. The next prime is 401551237642459. The reversal of 401551237642453 is 354246732155104.

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 a de Polignac number, because none of the positive numbers 2^k-401551237642453 is a prime.

It is a super-2 number, since 2×401551237642453² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401551237642453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401551237642459) 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, 4694596063 + ... + 4694681596.

It is an arithmetic number, because the mean of its divisors is an integer number (100390156740720).

Almost surely, 2^{401551237642453} is an apocalyptic number.

It is an amenable number.

401551237642453 is a deficient number, since it is larger than the sum of its proper divisors (9389320427).

401551237642453 is an equidigital number, since it uses as much as digits as its factorization.

401551237642453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9389320426.

The product of its (nonzero) digits is 12096000, while the sum is 52.

Adding to 401551237642453 its reverse (354246732155104), we get a palindrome (755797969797557).

The spelling of 401551237642453 in words is "four hundred one trillion, five hundred fifty-one billion, two hundred thirty-seven million, six hundred forty-two thousand, four hundred fifty-three".