515023421310145 has 32 divisors (see below), whose sum is σ = 713881124413056. Its totient is φ = 352524912768000.

The previous prime is 515023421310121. The next prime is 515023421310241. The reversal of 515023421310145 is 541013124320515.

It is not a de Polignac number, because 515023421310145 - 2²⁷ = 515023287092417 is a prime.

It is a Duffinian 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 in 31 ways as a sum of consecutive naturals, for example, 70820227 + ... + 77753143.

It is an arithmetic number, because the mean of its divisors is an integer number (22308785137908).

Almost surely, 2^{515023421310145} is an apocalyptic number.

515023421310145 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

515023421310145 is a deficient number, since it is larger than the sum of its proper divisors (198857703102911).

515023421310145 is a wasteful number, since it uses less digits than its factorization.

515023421310145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7012401.

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 515023421310145 in words is "five hundred fifteen trillion, twenty-three billion, four hundred twenty-one million, three hundred ten thousand, one hundred forty-five".