21345151741 has 8 divisors (see below), whose sum is σ = 23075840480. Its totient is φ = 19675189008.

The previous prime is 21345151739. The next prime is 21345151753. The reversal of 21345151741 is 14715154312.

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 21345151741 - 2¹ = 21345151739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21345151697 and 21345151706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21345151141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15180771 + ... + 15182176.

It is an arithmetic number, because the mean of its divisors is an integer number (2884480060).

Almost surely, 2^21345151741 is an apocalyptic number.

It is an amenable number.

21345151741 is a deficient number, since it is larger than the sum of its proper divisors (1730688739).

21345151741 is a wasteful number, since it uses less digits than its factorization.

21345151741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30363003.

The product of its digits is 16800, while the sum is 34.

The spelling of 21345151741 in words is "twenty-one billion, three hundred forty-five million, one hundred fifty-one thousand, seven hundred forty-one".