21436551124743 has 8 divisors (see below), whose sum is σ = 28865058940656. Its totient is φ = 14149538696000.

The previous prime is 21436551124721. The next prime is 21436551124759. The reversal of 21436551124743 is 34742115563412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21436551124743 - 2¹⁶ = 21436551059207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21436551124692 and 21436551124701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21436551124763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35373846438 + ... + 35373847043.

It is an arithmetic number, because the mean of its divisors is an integer number (3608132367582).

Almost surely, 2^{21436551124743} is an apocalyptic number.

21436551124743 is a deficient number, since it is larger than the sum of its proper divisors (7428507815913).

21436551124743 is a wasteful number, since it uses less digits than its factorization.

21436551124743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70747693585.

The product of its digits is 2419200, while the sum is 48.

The spelling of 21436551124743 in words is "twenty-one trillion, four hundred thirty-six billion, five hundred fifty-one million, one hundred twenty-four thousand, seven hundred forty-three".