2135666717544 has 32 divisors (see below), whose sum is σ = 5352221016000. Its totient is φ = 710148342912.

The previous prime is 2135666717537. The next prime is 2135666717551. The reversal of 2135666717544 is 4457176665312.

It is an interprime number because it is at equal distance from previous prime (2135666717537) and next prime (2135666717551).

It is a super-2 number, since 2×2135666717544² (a number of 25 digits) contains 22 as substring.

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, 108775164 + ... + 108794795.

It is an arithmetic number, because the mean of its divisors is an integer number (167256906750).

Almost surely, 2^{2135666717544} is an apocalyptic number.

2135666717544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2135666717544 is an abundant number, since it is smaller than the sum of its proper divisors (3216554298456).

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

2135666717544 is a wasteful number, since it uses less digits than its factorization.

2135666717544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217570377 (or 217570373 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 57.

The spelling of 2135666717544 in words is "two trillion, one hundred thirty-five billion, six hundred sixty-six million, seven hundred seventeen thousand, five hundred forty-four".