11572134477 has 8 divisors (see below), whose sum is σ = 15430388064. Its totient is φ = 7714318608.

The previous prime is 11572134461. The next prime is 11572134479. The reversal of 11572134477 is 77443127511.

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

It is not a de Polignac number, because 11572134477 - 2⁴ = 11572134461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11572134479) 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, 41763 + ... + 157760.

It is an arithmetic number, because the mean of its divisors is an integer number (1928798508).

Almost surely, 2^11572134477 is an apocalyptic number.

It is an amenable number.

11572134477 is a deficient number, since it is larger than the sum of its proper divisors (3858253587).

11572134477 is a wasteful number, since it uses less digits than its factorization.

11572134477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218859.

The product of its digits is 164640, while the sum is 42.

The spelling of 11572134477 in words is "eleven billion, five hundred seventy-two million, one hundred thirty-four thousand, four hundred seventy-seven".