11721242934 has 48 divisors (see below), whose sum is σ = 27146587104. Its totient is φ = 3646051200.

The previous prime is 11721242933. The next prime is 11721242963. The reversal of 11721242934 is 43924212711.

11721242934 is a `hidden beast` number, since 1 + 17 + 212 + 429 + 3 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11721242933) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 328297 + ... + 362244.

It is an arithmetic number, because the mean of its divisors is an integer number (565553898).

Almost surely, 2^11721242934 is an apocalyptic number.

11721242934 is an abundant number, since it is smaller than the sum of its proper divisors (15425344170).

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

11721242934 is a wasteful number, since it uses less digits than its factorization.

11721242934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690613 (or 690610 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The spelling of 11721242934 in words is "eleven billion, seven hundred twenty-one million, two hundred forty-two thousand, nine hundred thirty-four".