124144515011 has 4 divisors (see below), whose sum is σ = 135430380024. Its totient is φ = 112858650000.

The previous prime is 124144514951. The next prime is 124144515037. The reversal of 124144515011 is 110515441421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124144515011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124144505011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5642932490 + ... + 5642932511.

It is an arithmetic number, because the mean of its divisors is an integer number (33857595006).

Almost surely, 2^124144515011 is an apocalyptic number.

124144515011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

124144515011 is a deficient number, since it is larger than the sum of its proper divisors (11285865013).

124144515011 is a wasteful number, since it uses less digits than its factorization.

124144515011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11285865012.

The product of its (nonzero) digits is 3200, while the sum is 29.

Adding to 124144515011 its reverse (110515441421), we get a palindrome (234659956432).

The spelling of 124144515011 in words is "one hundred twenty-four billion, one hundred forty-four million, five hundred fifteen thousand, eleven".