1551403411001 has 4 divisors (see below), whose sum is σ = 1551405935604. Its totient is φ = 1551400886400.

The previous prime is 1551403410971. The next prime is 1551403411027. The reversal of 1551403411001 is 1001143041551.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 307275096976 + 1244128314025 = 554324^2 + 1115405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1551403411001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1551403471001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323741 + ... + 1790981.

It is an arithmetic number, because the mean of its divisors is an integer number (387851483901).

Almost surely, 2^{1551403411001} is an apocalyptic number.

It is an amenable number.

1551403411001 is a deficient number, since it is larger than the sum of its proper divisors (2524603).

1551403411001 is a wasteful number, since it uses less digits than its factorization.

1551403411001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2524602.

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 1551403411001 its reverse (1001143041551), we get a palindrome (2552546452552).

The spelling of 1551403411001 in words is "one trillion, five hundred fifty-one billion, four hundred three million, four hundred eleven thousand, one".