1545115450452 has 96 divisors (see below), whose sum is σ = 4149653114880. Its totient is φ = 438320332800.

The previous prime is 1545115450429. The next prime is 1545115450457. The reversal of 1545115450452 is 2540545115451.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1545115450457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26442324 + ... + 26500692.

It is an arithmetic number, because the mean of its divisors is an integer number (43225553280).

Almost surely, 2^{1545115450452} is an apocalyptic number.

1545115450452 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 1545115450452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2074826557440).

1545115450452 is an abundant number, since it is smaller than the sum of its proper divisors (2604537664428).

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

1545115450452 is a wasteful number, since it uses less digits than its factorization.

1545115450452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60621 (or 60619 counting only the distinct ones).

The product of its (nonzero) digits is 400000, while the sum is 42.

The spelling of 1545115450452 in words is "one trillion, five hundred forty-five billion, one hundred fifteen million, four hundred fifty thousand, four hundred fifty-two".