1516151656551 has 16 divisors (see below), whose sum is σ = 2313225137664. Its totient is φ = 865285323744.

The previous prime is 1516151656531. The next prime is 1516151656619. The reversal of 1516151656551 is 1556561516151.

It is not a de Polignac number, because 1516151656551 - 2⁷ = 1516151656423 is a prime.

It is a super-2 number, since 2×1516151656551² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1516151656551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1516151656531) 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 15 ways as a sum of consecutive naturals, for example, 45276675 + ... + 45310148.

It is an arithmetic number, because the mean of its divisors is an integer number (144576571104).

Almost surely, 2^{1516151656551} is an apocalyptic number.

1516151656551 is a deficient number, since it is larger than the sum of its proper divisors (797073481113).

1516151656551 is an equidigital number, since it uses as much as digits as its factorization.

1516151656551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90587630.

The product of its digits is 675000, while the sum is 48.

The spelling of 1516151656551 in words is "one trillion, five hundred sixteen billion, one hundred fifty-one million, six hundred fifty-six thousand, five hundred fifty-one".