1645760151552 has 544 divisors, whose sum is σ = 4986116999424. Its totient is φ = 478465228800.

The previous prime is 1645760151521. The next prime is 1645760151559. The reversal of 1645760151552 is 2551510675461.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1645760151559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10482548658 + ... + 10482548814.

Almost surely, 2^{1645760151552} is an apocalyptic number.

1645760151552 is a gapful number since it is divisible by the number (12) 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 1645760151552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2493058499712).

1645760151552 is an abundant number, since it is smaller than the sum of its proper divisors (3340356847872).

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

1645760151552 is a wasteful number, since it uses less digits than its factorization.

1645760151552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 1260000, while the sum is 48.

The spelling of 1645760151552 in words is "one trillion, six hundred forty-five billion, seven hundred sixty million, one hundred fifty-one thousand, five hundred fifty-two".