1231602553608 has 192 divisors, whose sum is σ = 3781422590400. Its totient is φ = 332374855680.

The previous prime is 1231602553603. The next prime is 1231602553613. The reversal of 1231602553608 is 8063552061321.

It is an interprime number because it is at equal distance from previous prime (1231602553603) and next prime (1231602553613).

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

It is a self number, because there is not a number n which added to its sum of digits gives 1231602553608.

It is not an unprimeable number, because it can be changed into a prime (1231602553603) 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, 7448148 + ... + 7611708.

It is an arithmetic number, because the mean of its divisors is an integer number (19694909325).

Almost surely, 2^{1231602553608} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231602553608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1890711295200).

1231602553608 is an abundant number, since it is smaller than the sum of its proper divisors (2549820036792).

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

1231602553608 is a wasteful number, since it uses less digits than its factorization.

1231602553608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163940 (or 163929 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 1231602553608 in words is "one trillion, two hundred thirty-one billion, six hundred two million, five hundred fifty-three thousand, six hundred eight".