21436626145044 has 48 divisors (see below), whose sum is σ = 57775719669696. Its totient is φ = 6113832768000.

The previous prime is 21436626145013. The next prime is 21436626145069. The reversal of 21436626145044 is 44054162663412.

It is a junction number, because it is equal to n+sod(n) for n = 21436626144984 and 21436626145002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4776429607 + ... + 4776434094.

It is an arithmetic number, because the mean of its divisors is an integer number (1203660826452).

Almost surely, 2^{21436626145044} is an apocalyptic number.

It is an amenable number.

21436626145044 is an abundant number, since it is smaller than the sum of its proper divisors (36339093524652).

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

21436626145044 is a wasteful number, since it uses less digits than its factorization.

21436626145044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9552863736 (or 9552863734 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 48.

The spelling of 21436626145044 in words is "twenty-one trillion, four hundred thirty-six billion, six hundred twenty-six million, one hundred forty-five thousand, forty-four".