20515366213 has 8 divisors (see below), whose sum is σ = 20588110848. Its totient is φ = 20442668064.

The previous prime is 20515366211. The next prime is 20515366231. The reversal of 20515366213 is 31266351502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20515366213 - 2¹ = 20515366211 is a prime.

It is a super-2 number, since 2×20515366213² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20515366211) 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, 1037820 + ... + 1057402.

It is an arithmetic number, because the mean of its divisors is an integer number (2573513856).

Almost surely, 2^20515366213 is an apocalyptic number.

It is an amenable number.

20515366213 is a deficient number, since it is larger than the sum of its proper divisors (72744635).

20515366213 is a wasteful number, since it uses less digits than its factorization.

20515366213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23243.

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 20515366213 in words is "twenty billion, five hundred fifteen million, three hundred sixty-six thousand, two hundred thirteen".