11030981957 has 4 divisors (see below), whose sum is σ = 11170614720. Its totient is φ = 10891349196.

The previous prime is 11030981933. The next prime is 11030981987. The reversal of 11030981957 is 75918903011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11030981957 - 2¹⁴ = 11030965573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11030981987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69816263 + ... + 69816420.

It is an arithmetic number, because the mean of its divisors is an integer number (2792653680).

Almost surely, 2^11030981957 is an apocalyptic number.

It is an amenable number.

11030981957 is a deficient number, since it is larger than the sum of its proper divisors (139632763).

11030981957 is an equidigital number, since it uses as much as digits as its factorization.

11030981957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139632762.

The product of its (nonzero) digits is 68040, while the sum is 44.

The spelling of 11030981957 in words is "eleven billion, thirty million, nine hundred eighty-one thousand, nine hundred fifty-seven".