11780265820 has 24 divisors (see below), whose sum is σ = 24957488304. Its totient is φ = 4670405376.

The previous prime is 11780265817. The next prime is 11780265869. The reversal of 11780265820 is 2856208711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2603994 + ... + 2608513.

It is an arithmetic number, because the mean of its divisors is an integer number (1039895346).

Almost surely, 2^11780265820 is an apocalyptic number.

11780265820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11780265820 is an abundant number, since it is smaller than the sum of its proper divisors (13177222484).

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

11780265820 is a wasteful number, since it uses less digits than its factorization.

11780265820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5212629 (or 5212627 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 11780265820 in words is "eleven billion, seven hundred eighty million, two hundred sixty-five thousand, eight hundred twenty".