2135566455 has 64 divisors (see below), whose sum is σ = 3816211968. Its totient is φ = 1011087360.

The previous prime is 2135566397. The next prime is 2135566457. The reversal of 2135566455 is 5546655312.

It is not a de Polignac number, because 2135566455 - 2¹⁴ = 2135550071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2135566457) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1287987 + ... + 1289643.

It is an arithmetic number, because the mean of its divisors is an integer number (59628312).

Almost surely, 2^2135566455 is an apocalyptic number.

2135566455 is a deficient number, since it is larger than the sum of its proper divisors (1680645513).

2135566455 is a wasteful number, since it uses less digits than its factorization.

2135566455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856.

The product of its digits is 540000, while the sum is 42.

The square root of 2135566455 is about 46212.1894633873. The cubic root of 2135566455 is about 1287.7682010156.

The spelling of 2135566455 in words is "two billion, one hundred thirty-five million, five hundred sixty-six thousand, four hundred fifty-five".