136630861952 has 128 divisors (see below), whose sum is σ = 299852582400. Its totient is φ = 61619097600.

The previous prime is 136630861951. The next prime is 136630861973. The reversal of 136630861952 is 259168036631.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 136630861952.

It is not an unprimeable number, because it can be changed into a prime (136630861951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71872202 + ... + 71874102.

It is an arithmetic number, because the mean of its divisors is an integer number (2342598300).

Almost surely, 2^136630861952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136630861952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149926291200).

136630861952 is an abundant number, since it is smaller than the sum of its proper divisors (163221720448).

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

136630861952 is a wasteful number, since it uses less digits than its factorization.

136630861952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2894 (or 2882 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 136630861952 in words is "one hundred thirty-six billion, six hundred thirty million, eight hundred sixty-one thousand, nine hundred fifty-two".