2145351153644 has 48 divisors (see below), whose sum is σ = 3980592946176. Its totient is φ = 1009921348800.

The previous prime is 2145351153619. The next prime is 2145351153653. The reversal of 2145351153644 is 4463511535412.

It is a junction number, because it is equal to n+sod(n) for n = 2145351153595 and 2145351153604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79317587 + ... + 79344629.

It is an arithmetic number, because the mean of its divisors is an integer number (82929019712).

Almost surely, 2^{2145351153644} is an apocalyptic number.

It is an amenable number.

2145351153644 is a deficient number, since it is larger than the sum of its proper divisors (1835241792532).

2145351153644 is a wasteful number, since it uses less digits than its factorization.

2145351153644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44406 (or 44404 counting only the distinct ones).

The product of its digits is 864000, while the sum is 44.

The spelling of 2145351153644 in words is "two trillion, one hundred forty-five billion, three hundred fifty-one million, one hundred fifty-three thousand, six hundred forty-four".