20209211015 has 16 divisors (see below), whose sum is σ = 29174200320. Its totient is φ = 13128389280.

The previous prime is 20209211003. The next prime is 20209211039. The reversal of 20209211015 is 51011290202.

It is not a de Polignac number, because 20209211015 - 2⁴ = 20209210999 is a prime.

It is a congruent number.

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, 15194231 + ... + 15195560.

It is an arithmetic number, because the mean of its divisors is an integer number (1823387520).

Almost surely, 2^20209211015 is an apocalyptic number.

20209211015 is a deficient number, since it is larger than the sum of its proper divisors (8964989305).

20209211015 is a wasteful number, since it uses less digits than its factorization.

20209211015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30389822.

The product of its (nonzero) digits is 360, while the sum is 23.

The spelling of 20209211015 in words is "twenty billion, two hundred nine million, two hundred eleven thousand, fifteen".