1401544143555 has 16 divisors (see below), whose sum is σ = 2314808392704. Its totient is φ = 723377622240.

The previous prime is 1401544143511. The next prime is 1401544143607. The reversal of 1401544143555 is 5553414451041.

It is a happy number.

It is not a de Polignac number, because 1401544143555 - 2⁸ = 1401544143299 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1507036249 + ... + 1507037178.

It is an arithmetic number, because the mean of its divisors is an integer number (144675524544).

Almost surely, 2^{1401544143555} is an apocalyptic number.

1401544143555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1401544143555 is a deficient number, since it is larger than the sum of its proper divisors (913264249149).

1401544143555 is a wasteful number, since it uses less digits than its factorization.

1401544143555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3014073466.

The product of its (nonzero) digits is 480000, while the sum is 42.

Adding to 1401544143555 its reverse (5553414451041), we get a palindrome (6954958594596).

The spelling of 1401544143555 in words is "one trillion, four hundred one billion, five hundred forty-four million, one hundred forty-three thousand, five hundred fifty-five".