21341315597700 has 288 divisors, whose sum is σ = 71173428609024. Its totient is φ = 4836260943360.

The previous prime is 21341315597681. The next prime is 21341315597743. The reversal of 21341315597700 is 779551314312.

It is a self number, because there is not a number n which added to its sum of digits gives 21341315597700.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 396555994 + ... + 396609806.

It is an arithmetic number, because the mean of its divisors is an integer number (247129960448).

Almost surely, 2^{21341315597700} is an apocalyptic number.

21341315597700 is a gapful number since it is divisible by the number (20) 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 21341315597700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35586714304512).

21341315597700 is an abundant number, since it is smaller than the sum of its proper divisors (49832113011324).

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

21341315597700 is a wasteful number, since it uses less digits than its factorization.

21341315597700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55451 (or 55444 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 48.

The spelling of 21341315597700 in words is "twenty-one trillion, three hundred forty-one billion, three hundred fifteen million, five hundred ninety-seven thousand, seven hundred".