11430487881 has 16 divisors (see below), whose sum is σ = 16958877120. Its totient is φ = 7609155840.

The previous prime is 11430487879. The next prime is 11430487903. The reversal of 11430487881 is 18878403411.

It is not a de Polignac number, because 11430487881 - 2¹ = 11430487879 is a prime.

It is a super-2 number, since 2×11430487881² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11430480881) 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, 291480 + ... + 328361.

It is an arithmetic number, because the mean of its divisors is an integer number (1059929820).

Almost surely, 2^11430487881 is an apocalyptic number.

It is an amenable number.

11430487881 is a deficient number, since it is larger than the sum of its proper divisors (5528389239).

11430487881 is an equidigital number, since it uses as much as digits as its factorization.

11430487881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620533 (or 620527 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The spelling of 11430487881 in words is "eleven billion, four hundred thirty million, four hundred eighty-seven thousand, eight hundred eighty-one".