1551153121004 has 6 divisors (see below), whose sum is σ = 2714517961764. Its totient is φ = 775576560500.

The previous prime is 1551153120997. The next prime is 1551153121009. The reversal of 1551153121004 is 4001213511551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1551153121009) 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 as a sum of consecutive naturals, namely, 193894140122 + ... + 193894140129.

It is an arithmetic number, because the mean of its divisors is an integer number (452419660294).

Almost surely, 2^{1551153121004} is an apocalyptic number.

It is an amenable number.

1551153121004 is a deficient number, since it is larger than the sum of its proper divisors (1163364840760).

1551153121004 is a wasteful number, since it uses less digits than its factorization.

1551153121004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387788280255 (or 387788280253 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 29.

Adding to 1551153121004 its reverse (4001213511551), we get a palindrome (5552366632555).

The spelling of 1551153121004 in words is "one trillion, five hundred fifty-one billion, one hundred fifty-three million, one hundred twenty-one thousand, four".