21901648035 has 16 divisors (see below), whose sum is σ = 35045834400. Its totient is φ = 11679813120.

The previous prime is 21901648001. The next prime is 21901648073. The reversal of 21901648035 is 53084610912.

It is not a de Polignac number, because 21901648035 - 2¹⁰ = 21901647011 is a prime.

It is a super-2 number, since 2×21901648035² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21901647984 and 21901648002.

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, 120145 + ... + 241325.

It is an arithmetic number, because the mean of its divisors is an integer number (2190364650).

Almost surely, 2^21901648035 is an apocalyptic number.

21901648035 is a deficient number, since it is larger than the sum of its proper divisors (13144186365).

21901648035 is a wasteful number, since it uses less digits than its factorization.

21901648035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133238.

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 21901648035 in words is "twenty-one billion, nine hundred one million, six hundred forty-eight thousand, thirty-five".