11124781257 has 8 divisors (see below), whose sum is σ = 15613728160. Its totient is φ = 7026177600.

The previous prime is 11124781229. The next prime is 11124781259. The reversal of 11124781257 is 75218742111.

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

It is not a de Polignac number, because 11124781257 - 2⁶ = 11124781193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11124781259) 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, 97585744 + ... + 97585857.

It is an arithmetic number, because the mean of its divisors is an integer number (1951716020).

Almost surely, 2^11124781257 is an apocalyptic number.

It is an amenable number.

11124781257 is a deficient number, since it is larger than the sum of its proper divisors (4488946903).

11124781257 is a wasteful number, since it uses less digits than its factorization.

11124781257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195171623.

The product of its digits is 31360, while the sum is 39.

The spelling of 11124781257 in words is "eleven billion, one hundred twenty-four million, seven hundred eighty-one thousand, two hundred fifty-seven".