2135145956 has 54 divisors (see below), whose sum is σ = 3954354390. Its totient is φ = 1008596160.

The previous prime is 2135145917. The next prime is 2135145983. The reversal of 2135145956 is 6595415312.

It can be written as a sum of positive squares in only one way, i.e., 1535385856 + 599760100 = 39184^2 + 24490^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 23990360 + ... + 23990448.

It is an arithmetic number, because the mean of its divisors is an integer number (73228785).

Almost surely, 2^2135145956 is an apocalyptic number.

It is an amenable number.

2135145956 is a deficient number, since it is larger than the sum of its proper divisors (1819208434).

2135145956 is an equidigital number, since it uses as much as digits as its factorization.

2135145956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 201 counting only the distinct ones).

The product of its digits is 162000, while the sum is 41.

The square root of 2135145956 is about 46207.6395848132. The cubic root of 2135145956 is about 1287.6836737489.

The spelling of 2135145956 in words is "two billion, one hundred thirty-five million, one hundred forty-five thousand, nine hundred fifty-six".