21000059498 has 8 divisors (see below), whose sum is σ = 34363733760. Its totient is φ = 9545481580.

The previous prime is 21000059497. The next prime is 21000059503. The reversal of 21000059498 is 89495000012.

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

It is not an unprimeable number, because it can be changed into a prime (21000059497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477274058 + ... + 477274101.

It is an arithmetic number, because the mean of its divisors is an integer number (4295466720).

Almost surely, 2^21000059498 is an apocalyptic number.

21000059498 is a deficient number, since it is larger than the sum of its proper divisors (13363674262).

21000059498 is a wasteful number, since it uses less digits than its factorization.

21000059498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954548172.

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 21000059498 in words is "twenty-one billion, fifty-nine thousand, four hundred ninety-eight".