1023544153540 has 48 divisors (see below), whose sum is σ = 2349296054784. Its totient is φ = 372904128000.

The previous prime is 1023544153531. The next prime is 1023544153543. The reversal of 1023544153540 is 453514453201.

It is a self number, because there is not a number n which added to its sum of digits gives 1023544153540.

It is not an unprimeable number, because it can be changed into a prime (1023544153543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48544686 + ... + 48565765.

It is an arithmetic number, because the mean of its divisors is an integer number (48943667808).

Almost surely, 2^{1023544153540} is an apocalyptic number.

1023544153540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023544153540 is an abundant number, since it is smaller than the sum of its proper divisors (1325751901244).

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

1023544153540 is a wasteful number, since it uses less digits than its factorization.

1023544153540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97110508 (or 97110506 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 1023544153540 in words is "one trillion, twenty-three billion, five hundred forty-four million, one hundred fifty-three thousand, five hundred forty".