10521440332542 has 24 divisors (see below), whose sum is σ = 22796514009360. Its totient is φ = 3507137553600.

The previous prime is 10521440332511. The next prime is 10521440332553. The reversal of 10521440332542 is 24523304412501.

It is a happy number.

10521440332542 is a `hidden beast` number, since 1 + 0 + 5 + 214 + 403 + 32 + 5 + 4 + 2 = 666.

It is a super-2 number, since 2×10521440332542² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10521440332497 and 10521440332506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11981559 + ... + 12829677.

It is an arithmetic number, because the mean of its divisors is an integer number (949854750390).

Almost surely, 2^{10521440332542} is an apocalyptic number.

10521440332542 is an abundant number, since it is smaller than the sum of its proper divisors (12275073676818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10521440332542 is a wasteful number, since it uses less digits than its factorization.

10521440332542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537328 (or 1537325 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The spelling of 10521440332542 in words is "ten trillion, five hundred twenty-one billion, four hundred forty million, three hundred thirty-two thousand, five hundred forty-two".