21741750030 has 128 divisors (see below), whose sum is σ = 70060225536. Its totient is φ = 4170240000.

The previous prime is 21741749957. The next prime is 21741750031. The reversal of 21741750030 is 3005714712.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21741750030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21741750031) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 331971 + ... + 392030.

It is an arithmetic number, because the mean of its divisors is an integer number (547345512).

Almost surely, 2^21741750030 is an apocalyptic number.

21741750030 is an abundant number, since it is smaller than the sum of its proper divisors (48318475506).

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

21741750030 is a wasteful number, since it uses less digits than its factorization.

21741750030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724042.

The product of its (nonzero) digits is 5880, while the sum is 30.

The spelling of 21741750030 in words is "twenty-one billion, seven hundred forty-one million, seven hundred fifty thousand, thirty".