21460110542 has 16 divisors (see below), whose sum is σ = 35009567712. Its totient is φ = 9806599200.

The previous prime is 21460110523. The next prime is 21460110563. The reversal of 21460110542 is 24501106412.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 4083458 + ... + 4088709.

It is an arithmetic number, because the mean of its divisors is an integer number (2188097982).

Almost surely, 2^21460110542 is an apocalyptic number.

21460110542 is a deficient number, since it is larger than the sum of its proper divisors (13549457170).

21460110542 is a wasteful number, since it uses less digits than its factorization.

21460110542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8172283.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 21460110542 its reverse (24501106412), we get a palindrome (45961216954).

The spelling of 21460110542 in words is "twenty-one billion, four hundred sixty million, one hundred ten thousand, five hundred forty-two".