1002153553320 has 128 divisors (see below), whose sum is σ = 3112898688000. Its totient is φ = 257796188160.

The previous prime is 1002153553279. The next prime is 1002153553339. The reversal of 1002153553320 is 233553512001.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3801385 + ... + 4056455.

It is an arithmetic number, because the mean of its divisors is an integer number (24319521000).

Almost surely, 2^{1002153553320} is an apocalyptic number.

1002153553320 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 1002153553320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1556449344000).

1002153553320 is an abundant number, since it is smaller than the sum of its proper divisors (2110745134680).

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

1002153553320 is a wasteful number, since it uses less digits than its factorization.

1002153553320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256243 (or 256239 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The spelling of 1002153553320 in words is "one trillion, two billion, one hundred fifty-three million, five hundred fifty-three thousand, three hundred twenty".