11709432157 has 8 divisors (see below), whose sum is σ = 12408444000. Its totient is φ = 11018692944.

The previous prime is 11709432151. The next prime is 11709432191. The reversal of 11709432157 is 75123490711.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11709432157 is a prime.

It is a super-2 number, since 2×11709432157² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11709432151) 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, 2065243 + ... + 2070904.

It is an arithmetic number, because the mean of its divisors is an integer number (1551055500).

Almost surely, 2^11709432157 is an apocalyptic number.

It is an amenable number.

11709432157 is a deficient number, since it is larger than the sum of its proper divisors (699011843).

11709432157 is a wasteful number, since it uses less digits than its factorization.

11709432157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4136315.

The product of its (nonzero) digits is 52920, while the sum is 40.

The spelling of 11709432157 in words is "eleven billion, seven hundred nine million, four hundred thirty-two thousand, one hundred fifty-seven".