20111465355 has 16 divisors (see below), whose sum is σ = 32193286944. Its totient is φ = 10721134080.

The previous prime is 20111465347. The next prime is 20111465377. The reversal of 20111465355 is 55356411102.

It is not a de Polignac number, because 20111465355 - 2³ = 20111465347 is a prime.

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, 277804 + ... + 342633.

It is an arithmetic number, because the mean of its divisors is an integer number (2012080434).

Almost surely, 2^20111465355 is an apocalyptic number.

20111465355 is a deficient number, since it is larger than the sum of its proper divisors (12081821589).

20111465355 is a wasteful number, since it uses less digits than its factorization.

20111465355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622606.

The product of its (nonzero) digits is 18000, while the sum is 33.

Adding to 20111465355 its reverse (55356411102), we get a palindrome (75467876457).

The spelling of 20111465355 in words is "twenty billion, one hundred eleven million, four hundred sixty-five thousand, three hundred fifty-five".