1551166100515 has 4 divisors (see below), whose sum is σ = 1861399320624. Its totient is φ = 1240932880408.

The previous prime is 1551166100513. The next prime is 1551166100531. The reversal of 1551166100515 is 5150016611551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1551166100515 - 2¹ = 1551166100513 is a prime.

It is a super-2 number, since 2×1551166100515² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1551166100513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155116610047 + ... + 155116610056.

It is an arithmetic number, because the mean of its divisors is an integer number (465349830156).

Almost surely, 2^{1551166100515} is an apocalyptic number.

1551166100515 is a deficient number, since it is larger than the sum of its proper divisors (310233220109).

1551166100515 is an equidigital number, since it uses as much as digits as its factorization.

1551166100515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310233220108.

The product of its (nonzero) digits is 22500, while the sum is 37.

The spelling of 1551166100515 in words is "one trillion, five hundred fifty-one billion, one hundred sixty-six million, one hundred thousand, five hundred fifteen".