1816653359136 has 96 divisors (see below), whose sum is σ = 5945411017728. Its totient is φ = 471858013440.

The previous prime is 1816653359099. The next prime is 1816653359141. The reversal of 1816653359136 is 6319533566181.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×1816653359136² (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 15 ways as a sum of consecutive naturals, for example, 122872300 + ... + 122887083.

It is an arithmetic number, because the mean of its divisors is an integer number (61931364768).

Almost surely, 2^{1816653359136} is an apocalyptic number.

1816653359136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1816653359136 is an abundant number, since it is smaller than the sum of its proper divisors (4128757658592).

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

1816653359136 is a wasteful number, since it uses less digits than its factorization.

1816653359136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245759414 (or 245759406 counting only the distinct ones).

The product of its digits is 10497600, while the sum is 57.

The spelling of 1816653359136 in words is "one trillion, eight hundred sixteen billion, six hundred fifty-three million, three hundred fifty-nine thousand, one hundred thirty-six".