1551115541121 has 16 divisors (see below), whose sum is σ = 2177424225600. Its totient is φ = 979462939968.

The previous prime is 1551115541119. The next prime is 1551115541201. The reversal of 1551115541121 is 1211455111551.

It is not a de Polignac number, because 1551115541121 - 2¹ = 1551115541119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1551115541021) 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, 2326366 + ... + 2917911.

It is an arithmetic number, because the mean of its divisors is an integer number (136089014100).

Almost surely, 2^{1551115541121} is an apocalyptic number.

It is an amenable number.

1551115541121 is a deficient number, since it is larger than the sum of its proper divisors (626308684479).

1551115541121 is a wasteful number, since it uses less digits than its factorization.

1551115541121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5249488.

The product of its digits is 5000, while the sum is 33.

The spelling of 1551115541121 in words is "one trillion, five hundred fifty-one billion, one hundred fifteen million, five hundred forty-one thousand, one hundred twenty-one".