1551201406105 has 48 divisors (see below), whose sum is σ = 2027403057456. Its totient is φ = 1138827755520.

The previous prime is 1551201406103. The next prime is 1551201406141. The reversal of 1551201406105 is 5016041021551.

It can be written as a sum of positive squares in 24 ways, for example, as 1192108034569 + 359093371536 = 1091837^2 + 599244^2 .

It is not a de Polignac number, because 1551201406105 - 2¹ = 1551201406103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1551201406103) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 481588395 + ... + 481591615.

It is an arithmetic number, because the mean of its divisors is an integer number (42237563697).

Almost surely, 2^{1551201406105} is an apocalyptic number.

It is an amenable number.

1551201406105 is a deficient number, since it is larger than the sum of its proper divisors (476201651351).

1551201406105 is a wasteful number, since it uses less digits than its factorization.

1551201406105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6398 (or 6385 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 31.

Adding to 1551201406105 its reverse (5016041021551), we get a palindrome (6567242427656).

The spelling of 1551201406105 in words is "one trillion, five hundred fifty-one billion, two hundred one million, four hundred six thousand, one hundred five".