11307578781 has 8 divisors (see below), whose sum is σ = 15963640704. Its totient is φ = 7094951360.

The previous prime is 11307578729. The next prime is 11307578809. The reversal of 11307578781 is 18787570311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11307578781 - 2²³ = 11299190173 is a prime.

It is a super-2 number, since 2×11307578781² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11307578781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11307578081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110858565 + ... + 110858666.

It is an arithmetic number, because the mean of its divisors is an integer number (1995455088).

Almost surely, 2^11307578781 is an apocalyptic number.

It is an amenable number.

11307578781 is a deficient number, since it is larger than the sum of its proper divisors (4656061923).

11307578781 is a wasteful number, since it uses less digits than its factorization.

11307578781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221717251.

The product of its (nonzero) digits is 329280, while the sum is 48.

The spelling of 11307578781 in words is "eleven billion, three hundred seven million, five hundred seventy-eight thousand, seven hundred eighty-one".