521500050074 has 8 divisors (see below), whose sum is σ = 782733248640. Its totient is φ = 260588967196.

The previous prime is 521500050067. The next prime is 521500050107. The reversal of 521500050074 is 470050005125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80524874 + ... + 80531349.

It is an arithmetic number, because the mean of its divisors is an integer number (97841656080).

Almost surely, 2^521500050074 is an apocalyptic number.

521500050074 is a deficient number, since it is larger than the sum of its proper divisors (261233198566).

521500050074 is a wasteful number, since it uses less digits than its factorization.

521500050074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161057844.

The product of its (nonzero) digits is 7000, while the sum is 29.

Adding to 521500050074 its reverse (470050005125), we get a palindrome (991550055199).

The spelling of 521500050074 in words is "five hundred twenty-one billion, five hundred million, fifty thousand, seventy-four".