21346011542 has 8 divisors (see below), whose sum is σ = 32151877032. Its totient is φ = 10628719200.

The previous prime is 21346011509. The next prime is 21346011551. The reversal of 21346011542 is 24511064312.

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

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, 22142684 + ... + 22143647.

It is an arithmetic number, because the mean of its divisors is an integer number (4018984629).

Almost surely, 2^21346011542 is an apocalyptic number.

21346011542 is a deficient number, since it is larger than the sum of its proper divisors (10805865490).

21346011542 is a wasteful number, since it uses less digits than its factorization.

21346011542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44286574.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 21346011542 its reverse (24511064312), we get a palindrome (45857075854).

The spelling of 21346011542 in words is "twenty-one billion, three hundred forty-six million, eleven thousand, five hundred forty-two".