11850500501 has 12 divisors (see below), whose sum is σ = 13856713452. Its totient is φ = 10104933888.

The previous prime is 11850500449. The next prime is 11850500503. The reversal of 11850500501 is 10500505811.

It can be written as a sum of positive squares in 2 ways, for example, as 5902080625 + 5948419876 = 76825^2 + 77126^2 .

It is not a de Polignac number, because 11850500501 - 2²⁶ = 11783391637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11850500503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 617090 + ... + 636003.

It is an arithmetic number, because the mean of its divisors is an integer number (1154726121).

Almost surely, 2^11850500501 is an apocalyptic number.

It is an amenable number.

11850500501 is a deficient number, since it is larger than the sum of its proper divisors (2006212951).

11850500501 is a wasteful number, since it uses less digits than its factorization.

11850500501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253300 (or 1253293 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 26.

The spelling of 11850500501 in words is "eleven billion, eight hundred fifty million, five hundred thousand, five hundred one".