1645321214630 has 16 divisors (see below), whose sum is σ = 2961647127504. Its totient is φ = 658113165600.

The previous prime is 1645321214629. The next prime is 1645321214639. The reversal of 1645321214630 is 364121235461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645321214639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1458797 + ... + 2327816.

It is an arithmetic number, because the mean of its divisors is an integer number (185102945469).

Almost surely, 2^{1645321214630} is an apocalyptic number.

1645321214630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1645321214630 is a deficient number, since it is larger than the sum of its proper divisors (1316325912874).

1645321214630 is a wasteful number, since it uses less digits than its factorization.

1645321214630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3830071.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 1645321214630 in words is "one trillion, six hundred forty-five billion, three hundred twenty-one million, two hundred fourteen thousand, six hundred thirty".