521421152152 has 32 divisors (see below), whose sum is σ = 993484018800. Its totient is φ = 256501707264.

The previous prime is 521421152137. The next prime is 521421152183. The reversal of 521421152152 is 251251124125.

It is a super-2 number, since 2×521421152152² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167613 + ... + 1034860.

Almost surely, 2^521421152152 is an apocalyptic number.

It is an amenable number.

521421152152 is a deficient number, since it is larger than the sum of its proper divisors (472062866648).

521421152152 is a wasteful number, since it uses less digits than its factorization.

521421152152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203355 (or 1203351 counting only the distinct ones).

The product of its digits is 8000, while the sum is 31.

Adding to 521421152152 its reverse (251251124125), we get a palindrome (772672276277).

The spelling of 521421152152 in words is "five hundred twenty-one billion, four hundred twenty-one million, one hundred fifty-two thousand, one hundred fifty-two".