400135450451 has 8 divisors (see below), whose sum is σ = 436516176384. Its totient is φ = 363755520520.

The previous prime is 400135450447. The next prime is 400135450459. The reversal of 400135450451 is 154054531004.

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 400135450451 - 2² = 400135450447 is a prime.

It is a super-2 number, since 2×400135450451² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400135450459) 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, 1436570 + ... + 1692336.

It is an arithmetic number, because the mean of its divisors is an integer number (54564522048).

Almost surely, 2^400135450451 is an apocalyptic number.

400135450451 is a deficient number, since it is larger than the sum of its proper divisors (36380725933).

400135450451 is a wasteful number, since it uses less digits than its factorization.

400135450451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398001.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 400135450451 its reverse (154054531004), we get a palindrome (554189981455).

The spelling of 400135450451 in words is "four hundred billion, one hundred thirty-five million, four hundred fifty thousand, four hundred fifty-one".