11515207047 has 8 divisors (see below), whose sum is σ = 15366614640. Its totient is φ = 7670302080.

The previous prime is 11515207037. The next prime is 11515207073. The reversal of 11515207047 is 74070251511.

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

It is not a de Polignac number, because 11515207047 - 2¹⁰ = 11515206023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11515206999 and 11515207017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11515207037) 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, 1621522 + ... + 1628607.

It is an arithmetic number, because the mean of its divisors is an integer number (1920826830).

Almost surely, 2^11515207047 is an apocalyptic number.

11515207047 is a deficient number, since it is larger than the sum of its proper divisors (3851407593).

11515207047 is a wasteful number, since it uses less digits than its factorization.

11515207047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251313.

The product of its (nonzero) digits is 9800, while the sum is 33.

Adding to 11515207047 its reverse (74070251511), we get a palindrome (85585458558).

The spelling of 11515207047 in words is "eleven billion, five hundred fifteen million, two hundred seven thousand, forty-seven".