1551515616052 has 6 divisors (see below), whose sum is σ = 2715152328098. Its totient is φ = 775757808024.

The previous prime is 1551515615981. The next prime is 1551515616073. The reversal of 1551515616052 is 2506165151551.

It can be written as a sum of positive squares in only one way, i.e., 1274559713296 + 276955902756 = 1128964^2 + 526266^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193939452003 + ... + 193939452010.

Almost surely, 2^{1551515616052} is an apocalyptic number.

It is an amenable number.

1551515616052 is a deficient number, since it is larger than the sum of its proper divisors (1163636712046).

1551515616052 is a wasteful number, since it uses less digits than its factorization.

1551515616052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387878904017 (or 387878904015 counting only the distinct ones).

The product of its (nonzero) digits is 225000, while the sum is 43.

The spelling of 1551515616052 in words is "one trillion, five hundred fifty-one billion, five hundred fifteen million, six hundred sixteen thousand, fifty-two".