1002352156540 has 144 divisors (see below), whose sum is σ = 2578351214880. Its totient is φ = 325465620480.

The previous prime is 1002352156501. The next prime is 1002352156541. The reversal of 1002352156540 is 456512532001.

It is a junction number, because it is equal to n+sod(n) for n = 1002352156496 and 1002352156505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002352156541) 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, 68830860 + ... + 68845420.

It is an arithmetic number, because the mean of its divisors is an integer number (17905216770).

Almost surely, 2^{1002352156540} is an apocalyptic number.

1002352156540 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 1002352156540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1289175607440).

1002352156540 is an abundant number, since it is smaller than the sum of its proper divisors (1575999058340).

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

1002352156540 is a wasteful number, since it uses less digits than its factorization.

1002352156540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18300 (or 18291 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 1002352156540 its reverse (456512532001), we get a palindrome (1458864688541).

The spelling of 1002352156540 in words is "one trillion, two billion, three hundred fifty-two million, one hundred fifty-six thousand, five hundred forty".