2151530616545 has 16 divisors (see below), whose sum is σ = 2694137162112. Its totient is φ = 1646360136960.

The previous prime is 2151530616511. The next prime is 2151530616563. The reversal of 2151530616545 is 5456160351512.

It is not a de Polignac number, because 2151530616545 - 2¹² = 2151530612449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2151530616496 and 2151530616505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8524889 + ... + 8773641.

It is an arithmetic number, because the mean of its divisors is an integer number (168383572632).

Almost surely, 2^{2151530616545} is an apocalyptic number.

It is an amenable number.

2151530616545 is a deficient number, since it is larger than the sum of its proper divisors (542606545567).

2151530616545 is a wasteful number, since it uses less digits than its factorization.

2151530616545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323992.

The product of its (nonzero) digits is 540000, while the sum is 44.

The spelling of 2151530616545 in words is "two trillion, one hundred fifty-one billion, five hundred thirty million, six hundred sixteen thousand, five hundred forty-five".