11734149780 has 48 divisors (see below), whose sum is σ = 36506245440. Its totient is φ = 3129106464.

The previous prime is 11734149773. The next prime is 11734149781. The reversal of 11734149780 is 8794143711.

11734149780 is a `hidden beast` number, since 1 + 1 + 73 + 414 + 97 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11734149781) 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, 10864414 + ... + 10865493.

It is an arithmetic number, because the mean of its divisors is an integer number (760546780).

Almost surely, 2^11734149780 is an apocalyptic number.

11734149780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11734149780 is an abundant number, since it is smaller than the sum of its proper divisors (24772095660).

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

11734149780 is a wasteful number, since it uses less digits than its factorization.

11734149780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21729925 (or 21729917 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The spelling of 11734149780 in words is "eleven billion, seven hundred thirty-four million, one hundred forty-nine thousand, seven hundred eighty".