20210309061 has 16 divisors (see below), whose sum is σ = 27891898560. Its totient is φ = 13001649920.

The previous prime is 20210309057. The next prime is 20210309083. The reversal of 20210309061 is 16090301202.

It is a cyclic number.

It is not a de Polignac number, because 20210309061 - 2² = 20210309057 is a prime.

It is a super-2 number, since 2×20210309061² (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 (20210308061) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 93421 + ... + 221693.

It is an arithmetic number, because the mean of its divisors is an integer number (1743243660).

Almost surely, 2^20210309061 is an apocalyptic number.

It is an amenable number.

20210309061 is a deficient number, since it is larger than the sum of its proper divisors (7681589499).

20210309061 is a wasteful number, since it uses less digits than its factorization.

20210309061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130116.

The product of its (nonzero) digits is 648, while the sum is 24.

The spelling of 20210309061 in words is "twenty billion, two hundred ten million, three hundred nine thousand, sixty-one".