1553155400111 has 16 divisors (see below), whose sum is σ = 1856228064768. Its totient is φ = 1270632184800.

The previous prime is 1553155400089. The next prime is 1553155400113. The reversal of 1553155400111 is 1110045513551.

It is a happy number.

It is not a de Polignac number, because 1553155400111 - 2³⁸ = 1278277493167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553155400113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10388825 + ... + 10537266.

It is an arithmetic number, because the mean of its divisors is an integer number (116014254048).

Almost surely, 2^{1553155400111} is an apocalyptic number.

1553155400111 is a deficient number, since it is larger than the sum of its proper divisors (303072664657).

1553155400111 is a wasteful number, since it uses less digits than its factorization.

1553155400111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20926582.

The product of its (nonzero) digits is 7500, while the sum is 32.

The spelling of 1553155400111 in words is "one trillion, five hundred fifty-three billion, one hundred fifty-five million, four hundred thousand, one hundred eleven".