11730624781 has 16 divisors (see below), whose sum is σ = 12445954560. Its totient is φ = 11036831040.

The previous prime is 11730624743. The next prime is 11730624803. The reversal of 11730624781 is 18742603711.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11730624781 is a prime.

It is a super-2 number, since 2×11730624781² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11730624701) 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, 1853835 + ... + 1860151.

It is an arithmetic number, because the mean of its divisors is an integer number (777872160).

Almost surely, 2^11730624781 is an apocalyptic number.

It is an amenable number.

11730624781 is a deficient number, since it is larger than the sum of its proper divisors (715329779).

11730624781 is a wasteful number, since it uses less digits than its factorization.

11730624781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8004.

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 11730624781 in words is "eleven billion, seven hundred thirty million, six hundred twenty-four thousand, seven hundred eighty-one".