21246061350 has 96 divisors (see below), whose sum is σ = 54066253824. Its totient is φ = 5518396800.

The previous prime is 21246061349. The next prime is 21246061351. The reversal of 21246061350 is 5316064212.

It is an interprime number because it is at equal distance from previous prime (21246061349) and next prime (21246061351).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21246061351) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2401435 + ... + 2410265.

It is an arithmetic number, because the mean of its divisors is an integer number (563190144).

Almost surely, 2^21246061350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21246061350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27033126912).

21246061350 is an abundant number, since it is smaller than the sum of its proper divisors (32820192474).

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

21246061350 is a wasteful number, since it uses less digits than its factorization.

21246061350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9262 (or 9257 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 21246061350 in words is "twenty-one billion, two hundred forty-six million, sixty-one thousand, three hundred fifty".