515040521530 has 32 divisors (see below), whose sum is σ = 989234308800. Its totient is φ = 192499638912.

The previous prime is 515040521509. The next prime is 515040521621. The reversal of 515040521530 is 35125040515.

It is a junction number, because it is equal to n+sod(n) for n = 515040521492 and 515040521501.

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, 18552840 + ... + 18580579.

It is an arithmetic number, because the mean of its divisors is an integer number (30913572150).

Almost surely, 2^515040521530 is an apocalyptic number.

515040521530 is a deficient number, since it is larger than the sum of its proper divisors (474193787270).

515040521530 is a wasteful number, since it uses less digits than its factorization.

515040521530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37133518.

The product of its (nonzero) digits is 15000, while the sum is 31.

The spelling of 515040521530 in words is "five hundred fifteen billion, forty million, five hundred twenty-one thousand, five hundred thirty".