11899361272 has 8 divisors (see below), whose sum is σ = 22311302400. Its totient is φ = 5949680632.

The previous prime is 11899361261. The next prime is 11899361273. The reversal of 11899361272 is 27216399811.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11899361273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 743710072 + ... + 743710087.

It is an arithmetic number, because the mean of its divisors is an integer number (2788912800).

Almost surely, 2^11899361272 is an apocalyptic number.

It is an amenable number.

11899361272 is a deficient number, since it is larger than the sum of its proper divisors (10411941128).

11899361272 is a wasteful number, since it uses less digits than its factorization.

11899361272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487420165 (or 1487420161 counting only the distinct ones).

The product of its digits is 326592, while the sum is 49.

The spelling of 11899361272 in words is "eleven billion, eight hundred ninety-nine million, three hundred sixty-one thousand, two hundred seventy-two".