2147645553850 has 12 divisors (see below), whose sum is σ = 3994620730254. Its totient is φ = 859058221520.

The previous prime is 2147645553847. The next prime is 2147645553853. The reversal of 2147645553850 is 583555467412.

It is an interprime number because it is at equal distance from previous prime (2147645553847) and next prime (2147645553853).

It can be written as a sum of positive squares in 3 ways, for example, as 1576709660241 + 570935893609 = 1255671^2 + 755603^2 .

It is a super-2 number, since 2×2147645553850² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2147645553791 and 2147645553800.

It is not an unprimeable number, because it can be changed into a prime (2147645553853) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21476455489 + ... + 21476455588.

Almost surely, 2^{2147645553850} is an apocalyptic number.

2147645553850 is a deficient number, since it is larger than the sum of its proper divisors (1846975176404).

2147645553850 is a wasteful number, since it uses less digits than its factorization.

2147645553850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42952911089 (or 42952911084 counting only the distinct ones).

The product of its (nonzero) digits is 20160000, while the sum is 55.

The spelling of 2147645553850 in words is "two trillion, one hundred forty-seven billion, six hundred forty-five million, five hundred fifty-three thousand, eight hundred fifty".