11645161500 has 192 divisors, whose sum is σ = 41035438080. Its totient is φ = 2505139200.

The previous prime is 11645161499. The next prime is 11645161511. The reversal of 11645161500 is 516154611.

It is a super-2 number, since 2×11645161500² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 145881 + ... + 211119.

It is an arithmetic number, because the mean of its divisors is an integer number (213726240).

Almost surely, 2^11645161500 is an apocalyptic number.

11645161500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11645161500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20517719040).

11645161500 is an abundant number, since it is smaller than the sum of its proper divisors (29390276580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11645161500 is a wasteful number, since it uses less digits than its factorization.

11645161500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65285 (or 65273 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

The spelling of 11645161500 in words is "eleven billion, six hundred forty-five million, one hundred sixty-one thousand, five hundred".