11445769890 has 24 divisors (see below), whose sum is σ = 29759001948. Its totient is φ = 3052205280.

The previous prime is 11445769889. The next prime is 11445769939. The reversal of 11445769890 is 9896754411.

11445769890 is a `hidden beast` number, since 1 + 14 + 457 + 6 + 98 + 90 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11112743889 + 333026001 = 105417^2 + 18249^2 .

It is a super-2 number, since 2×11445769890² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63587521 + ... + 63587700.

Almost surely, 2^11445769890 is an apocalyptic number.

11445769890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11445769890 is an abundant number, since it is smaller than the sum of its proper divisors (18313232058).

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

11445769890 is a wasteful number, since it uses less digits than its factorization.

11445769890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127175234 (or 127175231 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 11445769890 in words is "eleven billion, four hundred forty-five million, seven hundred sixty-nine thousand, eight hundred ninety".