21377416142 has 4 divisors (see below), whose sum is σ = 32066124216. Its totient is φ = 10688708070.

The previous prime is 21377416129. The next prime is 21377416169. The reversal of 21377416142 is 24161477312.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 21377416096 and 21377416105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5344354034 + ... + 5344354037.

It is an arithmetic number, because the mean of its divisors is an integer number (8016531054).

Almost surely, 2^21377416142 is an apocalyptic number.

21377416142 is a deficient number, since it is larger than the sum of its proper divisors (10688708074).

21377416142 is a wasteful number, since it uses less digits than its factorization.

21377416142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10688708073.

The product of its digits is 56448, while the sum is 38.

The spelling of 21377416142 in words is "twenty-one billion, three hundred seventy-seven million, four hundred sixteen thousand, one hundred forty-two".