2135512456 has 32 divisors (see below), whose sum is σ = 4992108480. Its totient is φ = 832017600.

The previous prime is 2135512439. The next prime is 2135512481. The reversal of 2135512456 is 6542155312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1732755 + ... + 1733986.

It is an arithmetic number, because the mean of its divisors is an integer number (156003390).

Almost surely, 2^2135512456 is an apocalyptic number.

It is an amenable number.

2135512456 is an abundant number, since it is smaller than the sum of its proper divisors (2856596024).

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

2135512456 is a wasteful number, since it uses less digits than its factorization.

2135512456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3466765 (or 3466761 counting only the distinct ones).

The product of its digits is 36000, while the sum is 34.

The square root of 2135512456 is about 46211.6052090814. The cubic root of 2135512456 is about 1287.7573469428.

Adding to 2135512456 its reverse (6542155312), we get a palindrome (8677667768).

The spelling of 2135512456 in words is "two billion, one hundred thirty-five million, five hundred twelve thousand, four hundred fifty-six".