21160510400542 has 8 divisors (see below), whose sum is σ = 31744322813016. Its totient is φ = 10579069462872.

The previous prime is 21160510400507. The next prime is 21160510400573. The reversal of 21160510400542 is 24500401506112.

It is a happy number.

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

It is a super-2 number, since 2×21160510400542² (a number of 27 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 3 ways as a sum of consecutive naturals, for example, 592846393 + ... + 592882084.

It is an arithmetic number, because the mean of its divisors is an integer number (3968040351627).

Almost surely, 2^{21160510400542} is an apocalyptic number.

21160510400542 is a deficient number, since it is larger than the sum of its proper divisors (10583812412474).

21160510400542 is a wasteful number, since it uses less digits than its factorization.

21160510400542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185737402.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 21160510400542 its reverse (24500401506112), we get a palindrome (45660911906654).

The spelling of 21160510400542 in words is "twenty-one trillion, one hundred sixty billion, five hundred ten million, four hundred thousand, five hundred forty-two".