21376144034 has 16 divisors (see below), whose sum is σ = 37265918400. Its totient is φ = 9005929584.

The previous prime is 21376143973. The next prime is 21376144057. The reversal of 21376144034 is 43044167312.

It is a junction number, because it is equal to n+sod(n) for n = 21376143985 and 21376144003.

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, 12938729 + ... + 12940380.

It is an arithmetic number, because the mean of its divisors is an integer number (2329119900).

Almost surely, 2^21376144034 is an apocalyptic number.

21376144034 is a deficient number, since it is larger than the sum of its proper divisors (15889774366).

21376144034 is a wasteful number, since it uses less digits than its factorization.

21376144034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25879177.

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 21376144034 in words is "twenty-one billion, three hundred seventy-six million, one hundred forty-four thousand, thirty-four".