21430733950 has 12 divisors (see below), whose sum is σ = 39861165240. Its totient is φ = 8572293560.

The previous prime is 21430733911. The next prime is 21430733993. The reversal of 21430733950 is 5933703412.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214307290 + ... + 214307389.

It is an arithmetic number, because the mean of its divisors is an integer number (3321763770).

Almost surely, 2^21430733950 is an apocalyptic number.

21430733950 is a deficient number, since it is larger than the sum of its proper divisors (18430431290).

21430733950 is a wasteful number, since it uses less digits than its factorization.

21430733950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428614691 (or 428614686 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 37.

The spelling of 21430733950 in words is "twenty-one billion, four hundred thirty million, seven hundred thirty-three thousand, nine hundred fifty".