1645925962240 has 480 divisors, whose sum is σ = 4690443542400. Its totient is φ = 552189689856.

The previous prime is 1645925962217. The next prime is 1645925962243. The reversal of 1645925962240 is 422695295461.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1645925962243) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1176501061 + ... + 1176502459.

It is an arithmetic number, because the mean of its divisors is an integer number (9771757380).

Almost surely, 2^{1645925962240} is an apocalyptic number.

1645925962240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1645925962240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2345221771200).

1645925962240 is an abundant number, since it is smaller than the sum of its proper divisors (3044517580160).

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

1645925962240 is a wasteful number, since it uses less digits than its factorization.

1645925962240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632 (or 1609 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 55.

The spelling of 1645925962240 in words is "one trillion, six hundred forty-five billion, nine hundred twenty-five million, nine hundred sixty-two thousand, two hundred forty".