11601501506 has 16 divisors (see below), whose sum is σ = 19901592000. Its totient is φ = 4968746160.

The previous prime is 11601501497. The next prime is 11601501557. The reversal of 11601501506 is 60510510611.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255425 + ... + 297396.

It is an arithmetic number, because the mean of its divisors is an integer number (1243849500).

Almost surely, 2^11601501506 is an apocalyptic number.

11601501506 is a deficient number, since it is larger than the sum of its proper divisors (8300090494).

11601501506 is a wasteful number, since it uses less digits than its factorization.

11601501506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554329.

The product of its (nonzero) digits is 900, while the sum is 26.

The spelling of 11601501506 in words is "eleven billion, six hundred one million, five hundred one thousand, five hundred six".