21234176374 has 4 divisors (see below), whose sum is σ = 31851264564. Its totient is φ = 10617088186.

The previous prime is 21234176371. The next prime is 21234176387. The reversal of 21234176374 is 47367143212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21234176371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5308544092 + ... + 5308544095.

It is an arithmetic number, because the mean of its divisors is an integer number (7962816141).

Almost surely, 2^21234176374 is an apocalyptic number.

21234176374 is a deficient number, since it is larger than the sum of its proper divisors (10617088190).

21234176374 is a wasteful number, since it uses less digits than its factorization.

21234176374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10617088189.

The product of its digits is 169344, while the sum is 40.

The spelling of 21234176374 in words is "twenty-one billion, two hundred thirty-four million, one hundred seventy-six thousand, three hundred seventy-four".