11531562607 has 4 divisors (see below), whose sum is σ = 11532255880. Its totient is φ = 11530869336.

The previous prime is 11531562571. The next prime is 11531562611. The reversal of 11531562607 is 70626513511.

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-11531562607 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 (11531562307) 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, 321057 + ... + 355162.

It is an arithmetic number, because the mean of its divisors is an integer number (2883063970).

Almost surely, 2^11531562607 is an apocalyptic number.

11531562607 is a deficient number, since it is larger than the sum of its proper divisors (693273).

11531562607 is an equidigital number, since it uses as much as digits as its factorization.

11531562607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693272.

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 11531562607 in words is "eleven billion, five hundred thirty-one million, five hundred sixty-two thousand, six hundred seven".