1645363429500 has 144 divisors (see below), whose sum is σ = 5573551340448. Its totient is φ = 376083052800.

The previous prime is 1645363429483. The next prime is 1645363429517. The reversal of 1645363429500 is 59243635461.

It is an interprime number because it is at equal distance from previous prime (1645363429483) and next prime (1645363429517).

It is a self number, because there is not a number n which added to its sum of digits gives 1645363429500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11119449 + ... + 11266448.

It is an arithmetic number, because the mean of its divisors is an integer number (38705217642).

Almost surely, 2^{1645363429500} is an apocalyptic number.

1645363429500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1645363429500 is an abundant number, since it is smaller than the sum of its proper divisors (3928187910948).

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

1645363429500 is a wasteful number, since it uses less digits than its factorization.

1645363429500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22385933 (or 22385914 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 48.

The spelling of 1645363429500 in words is "one trillion, six hundred forty-five billion, three hundred sixty-three million, four hundred twenty-nine thousand, five hundred".