21350077245 has 48 divisors (see below), whose sum is σ = 42332863872. Its totient is φ = 9750948480.

The previous prime is 21350077193. The next prime is 21350077253. The reversal of 21350077245 is 54277005312.

It is not a de Polignac number, because 21350077245 - 2⁹ = 21350076733 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 313290 + ... + 375300.

It is an arithmetic number, because the mean of its divisors is an integer number (881934664).

Almost surely, 2^21350077245 is an apocalyptic number.

It is an amenable number.

21350077245 is a deficient number, since it is larger than the sum of its proper divisors (20982786627).

21350077245 is a wasteful number, since it uses less digits than its factorization.

21350077245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63122 (or 63119 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The spelling of 21350077245 in words is "twenty-one billion, three hundred fifty million, seventy-seven thousand, two hundred forty-five".