11020513455 has 128 divisors (see below), whose sum is σ = 23377551360. Its totient is φ = 4820497920.

The previous prime is 11020513433. The next prime is 11020513481. The reversal of 11020513455 is 55431502011.

11020513455 is a `hidden beast` number, since 1 + 1 + 0 + 205 + 1 + 3 + 455 = 666.

It is not a de Polignac number, because 11020513455 - 2¹¹ = 11020511407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2130282 + ... + 2135448.

It is an arithmetic number, because the mean of its divisors is an integer number (182637120).

Almost surely, 2^11020513455 is an apocalyptic number.

11020513455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11020513455 is an abundant number, since it is smaller than the sum of its proper divisors (12357037905).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11020513455 is a wasteful number, since it uses less digits than its factorization.

11020513455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5286 (or 5280 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The spelling of 11020513455 in words is "eleven billion, twenty million, five hundred thirteen thousand, four hundred fifty-five".