21453225160276 has 96 divisors (see below), whose sum is σ = 48226114879488. Its totient is φ = 8116278192000.

The previous prime is 21453225160271. The next prime is 21453225160321. The reversal of 21453225160276 is 67206152235412.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21453225160271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39775401 + ... + 40311151.

It is an arithmetic number, because the mean of its divisors is an integer number (502355363328).

Almost surely, 2^{21453225160276} is an apocalyptic number.

21453225160276 is a gapful number since it is divisible by the number (26) 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 21453225160276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24113057439744).

21453225160276 is an abundant number, since it is smaller than the sum of its proper divisors (26772889719212).

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

21453225160276 is a wasteful number, since it uses less digits than its factorization.

21453225160276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540581 (or 540579 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 46.

Adding to 21453225160276 its reverse (67206152235412), we get a palindrome (88659377395688).

The spelling of 21453225160276 in words is "twenty-one trillion, four hundred fifty-three billion, two hundred twenty-five million, one hundred sixty thousand, two hundred seventy-six".