20958085902 has 16 divisors (see below), whose sum is σ = 45140492880. Its totient is φ = 6448641792.

The previous prime is 20958085849. The next prime is 20958085909.

20958085902 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×20958085902² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20958085909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134346627 + ... + 134346782.

It is an arithmetic number, because the mean of its divisors is an integer number (2821280805).

Almost surely, 2^20958085902 is an apocalyptic number.

20958085902 is an abundant number, since it is smaller than the sum of its proper divisors (24182406978).

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

20958085902 is a wasteful number, since it uses less digits than its factorization.

20958085902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268693427.

The product of its (nonzero) digits is 518400, while the sum is 48.

The spelling of 20958085902 in words is "twenty billion, nine hundred fifty-eight million, eighty-five thousand, nine hundred two".