20377002213 has 12 divisors (see below), whose sum is σ = 31164827148. Its totient is φ = 12785569920.

The previous prime is 20377002169. The next prime is 20377002227. The reversal of 20377002213 is 31220077302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7371424449 + 13005577764 = 85857^2 + 114042^2 .

It is not a de Polignac number, because 20377002213 - 2¹⁶ = 20376936677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20377002253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66591358 + ... + 66591663.

It is an arithmetic number, because the mean of its divisors is an integer number (2597068929).

Almost surely, 2^20377002213 is an apocalyptic number.

It is an amenable number.

20377002213 is a deficient number, since it is larger than the sum of its proper divisors (10787824935).

20377002213 is a wasteful number, since it uses less digits than its factorization.

20377002213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133183044 (or 133183041 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

Adding to 20377002213 its reverse (31220077302), we get a palindrome (51597079515).

The spelling of 20377002213 in words is "twenty billion, three hundred seventy-seven million, two thousand, two hundred thirteen".