11139781667620 has 24 divisors (see below), whose sum is σ = 23397978200184. Its totient is φ = 4455067581696.

The previous prime is 11139781667611. The next prime is 11139781667621. The reversal of 11139781667620 is 2676618793111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2402921618496 + 8736860049124 = 1550136^2 + 2955818^2 .

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (11139781667621) 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, 52709739 + ... + 52920658.

It is an arithmetic number, because the mean of its divisors is an integer number (974915758341).

Almost surely, 2^{11139781667620} is an apocalyptic number.

11139781667620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11139781667620 is an abundant number, since it is smaller than the sum of its proper divisors (12258196532564).

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

11139781667620 is a wasteful number, since it uses less digits than its factorization.

11139781667620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105635679 (or 105635677 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 58.

The spelling of 11139781667620 in words is "eleven trillion, one hundred thirty-nine billion, seven hundred eighty-one million, six hundred sixty-seven thousand, six hundred twenty".