12401143554 has 32 divisors (see below), whose sum is σ = 26813292480. Its totient is φ = 3810307392.

The previous prime is 12401143553. The next prime is 12401143607. The reversal of 12401143554 is 45534110421.

It is a super-2 number, since 2×12401143554² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12401143553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1465809 + ... + 1474244.

It is an arithmetic number, because the mean of its divisors is an integer number (837915390).

Almost surely, 2^12401143554 is an apocalyptic number.

12401143554 is an abundant number, since it is smaller than the sum of its proper divisors (14412148926).

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

12401143554 is a wasteful number, since it uses less digits than its factorization.

12401143554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2940114.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 12401143554 its reverse (45534110421), we get a palindrome (57935253975).

The spelling of 12401143554 in words is "twelve billion, four hundred one million, one hundred forty-three thousand, five hundred fifty-four".