2151530513615 has 64 divisors (see below), whose sum is σ = 3133839421440. Its totient is φ = 1385197355520.

The previous prime is 2151530513611. The next prime is 2151530513621. The reversal of 2151530513615 is 5163150351512.

It is not a de Polignac number, because 2151530513615 - 2² = 2151530513611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151530513611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35236442 + ... + 35297448.

It is an arithmetic number, because the mean of its divisors is an integer number (48966240960).

Almost surely, 2^{2151530513615} is an apocalyptic number.

2151530513615 is a deficient number, since it is larger than the sum of its proper divisors (982308907825).

2151530513615 is a wasteful number, since it uses less digits than its factorization.

2151530513615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61512.

The product of its (nonzero) digits is 67500, while the sum is 38.

The spelling of 2151530513615 in words is "two trillion, one hundred fifty-one billion, five hundred thirty million, five hundred thirteen thousand, six hundred fifteen".