21454524050040 has 96 divisors (see below), whose sum is σ = 72758820719520. Its totient is φ = 5472458306304.

The previous prime is 21454524050033. The next prime is 21454524050077. The reversal of 21454524050040 is 4005042545412.

21454524050040 is a `hidden beast` number, since 2 + 1 + 4 + 545 + 24 + 0 + 50 + 0 + 40 = 666.

It is a super-3 number, since 3×21454524050040³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 21454524049977 and 21454524050004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1295554767 + ... + 1295571326.

It is an arithmetic number, because the mean of its divisors is an integer number (757904382495).

Almost surely, 2^{21454524050040} is an apocalyptic number.

21454524050040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21454524050040 is an abundant number, since it is smaller than the sum of its proper divisors (51304296669480).

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

21454524050040 is a wasteful number, since it uses less digits than its factorization.

21454524050040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591126133 (or 2591126126 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 36.

Adding to 21454524050040 its reverse (4005042545412), we get a palindrome (25459566595452).

The spelling of 21454524050040 in words is "twenty-one trillion, four hundred fifty-four billion, five hundred twenty-four million, fifty thousand, forty".