21418371004 has 24 divisors (see below), whose sum is σ = 38508170960. Its totient is φ = 10416231936.

The previous prime is 21418370969. The next prime is 21418371011. The reversal of 21418371004 is 40017381412.

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, 446179 + ... + 491845.

Almost surely, 2^21418371004 is an apocalyptic number.

It is an amenable number.

21418371004 is a deficient number, since it is larger than the sum of its proper divisors (17089799956).

21418371004 is a wasteful number, since it uses less digits than its factorization.

21418371004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48877 (or 48875 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The spelling of 21418371004 in words is "twenty-one billion, four hundred eighteen million, three hundred seventy-one thousand, four".