2145364131644 has 48 divisors (see below), whose sum is σ = 3867036096000. Its totient is φ = 1040828757696.

The previous prime is 2145364131569. The next prime is 2145364131737. The reversal of 2145364131644 is 4461314635412.

It is a super-2 number, since 2×2145364131644² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2145364131595 and 2145364131604.

It is a congruent number.

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, 232202777 + ... + 232212015.

It is an arithmetic number, because the mean of its divisors is an integer number (80563252000).

Almost surely, 2^{2145364131644} is an apocalyptic number.

It is an amenable number.

2145364131644 is a deficient number, since it is larger than the sum of its proper divisors (1721671964356).

2145364131644 is a wasteful number, since it uses less digits than its factorization.

2145364131644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18042 (or 18040 counting only the distinct ones).

The product of its digits is 829440, while the sum is 44.

The spelling of 2145364131644 in words is "two trillion, one hundred forty-five billion, three hundred sixty-four million, one hundred thirty-one thousand, six hundred forty-four".