21113355152652 has 192 divisors, whose sum is σ = 59029912854528. Its totient is φ = 5747112000000.

The previous prime is 21113355152639. The next prime is 21113355152671. The reversal of 21113355152652 is 25625155331112.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 804274527 + ... + 804300777.

It is an arithmetic number, because the mean of its divisors is an integer number (307447462784).

Almost surely, 2^{21113355152652} 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 21113355152652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29514956427264).

21113355152652 is an abundant number, since it is smaller than the sum of its proper divisors (37916557701876).

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

21113355152652 is a wasteful number, since it uses less digits than its factorization.

21113355152652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31780 (or 31778 counting only the distinct ones).

The product of its digits is 270000, while the sum is 42.

The spelling of 21113355152652 in words is "twenty-one trillion, one hundred thirteen billion, three hundred fifty-five million, one hundred fifty-two thousand, six hundred fifty-two".