21310750145 has 16 divisors (see below), whose sum is σ = 26020941120. Its totient is φ = 16750231104.

The previous prime is 21310750127. The next prime is 21310750183. The reversal of 21310750145 is 54105701312.

It is a cyclic number.

It is not a de Polignac number, because 21310750145 - 2¹⁴ = 21310733761 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 531419 + ... + 570111.

It is an arithmetic number, because the mean of its divisors is an integer number (1626308820).

Almost surely, 2^21310750145 is an apocalyptic number.

It is an amenable number.

21310750145 is a deficient number, since it is larger than the sum of its proper divisors (4710190975).

21310750145 is a wasteful number, since it uses less digits than its factorization.

21310750145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40624.

The product of its (nonzero) digits is 4200, while the sum is 29.

The spelling of 21310750145 in words is "twenty-one billion, three hundred ten million, seven hundred fifty thousand, one hundred forty-five".