21344377950 has 108 divisors (see below), whose sum is σ = 66707784000. Its totient is φ = 4878709920.

The previous prime is 21344377937. The next prime is 21344377963. The reversal of 21344377950 is 5977344312.

It is an interprime number because it is at equal distance from previous prime (21344377937) and next prime (21344377963).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 21344377896 and 21344377905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 461950 + ... + 506049.

Almost surely, 2^21344377950 is an apocalyptic number.

21344377950 is an abundant number, since it is smaller than the sum of its proper divisors (45363406050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21344377950 is a wasteful number, since it uses less digits than its factorization.

21344377950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968031 (or 968016 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 21344377950 in words is "twenty-one billion, three hundred forty-four million, three hundred seventy-seven thousand, nine hundred fifty".