11777723540 has 48 divisors (see below), whose sum is σ = 27029903040. Its totient is φ = 4275156480.

The previous prime is 11777723501. The next prime is 11777723549. The reversal of 11777723540 is 4532777711.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 11777723491 and 11777723500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11777723549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76316 + ... + 171404.

It is an arithmetic number, because the mean of its divisors is an integer number (563122980).

Almost surely, 2^11777723540 is an apocalyptic number.

11777723540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11777723540 is an abundant number, since it is smaller than the sum of its proper divisors (15252179500).

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

11777723540 is a wasteful number, since it uses less digits than its factorization.

11777723540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95672 (or 95670 counting only the distinct ones).

The product of its (nonzero) digits is 288120, while the sum is 44.

The spelling of 11777723540 in words is "eleven billion, seven hundred seventy-seven million, seven hundred twenty-three thousand, five hundred forty".