10521135542 has 16 divisors (see below), whose sum is σ = 17117602992. Its totient is φ = 4830362880.

The previous prime is 10521135517. The next prime is 10521135551. The reversal of 10521135542 is 24553112501.

It is a super-2 number, since 2×10521135542² (a number of 21 digits) contains 22 as substring.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 3772328 + ... + 3775115.

It is an arithmetic number, because the mean of its divisors is an integer number (1069850187).

Almost surely, 2^10521135542 is an apocalyptic number.

10521135542 is a deficient number, since it is larger than the sum of its proper divisors (6596467450).

10521135542 is a wasteful number, since it uses less digits than its factorization.

10521135542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7547503.

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 10521135542 in words is "ten billion, five hundred twenty-one million, one hundred thirty-five thousand, five hundred forty-two".