1002202115544 has 80 divisors (see below), whose sum is σ = 3208107315600. Its totient is φ = 286343460288.

The previous prime is 1002202115543. The next prime is 1002202115567. The reversal of 1002202115544 is 4455112022001.

It is a happy number.

1002202115544 is a `hidden beast` number, since 1 + 0 + 0 + 2 + 2 + 0 + 2 + 115 + 544 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002202115543) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 110467479 + ... + 110476550.

It is an arithmetic number, because the mean of its divisors is an integer number (40101341445).

Almost surely, 2^{1002202115544} is an apocalyptic number.

1002202115544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1002202115544 is an abundant number, since it is smaller than the sum of its proper divisors (2205905200056).

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

1002202115544 is a wasteful number, since it uses less digits than its factorization.

1002202115544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220944054 (or 220944041 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 1002202115544 its reverse (4455112022001), we get a palindrome (5457314137545).

The spelling of 1002202115544 in words is "one trillion, two billion, two hundred two million, one hundred fifteen thousand, five hundred forty-four".