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21442023402355 = 54288404680471
BaseRepresentation
bin1001110000000010111000…
…01100000010101101110011
32210220211121110220022212001
410320001130030002231303
510302301230442333410
6113334155104114431
74342064220503653
oct470013414025563
983824543808761
1021442023402355
116917569244516
1224a3736305a17
13bc6c8821c45a
14541b29a62363
15272b5246433a
hex13805c302b73

21442023402355 has 4 divisors (see below), whose sum is σ = 25730428082832. Its totient is φ = 17153618721880.

The previous prime is 21442023402337. The next prime is 21442023402361. The reversal of 21442023402355 is 55320432024412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 21442023402355 - 27 = 21442023402227 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2144202340231 + ... + 2144202340240.

It is an arithmetic number, because the mean of its divisors is an integer number (6432607020708).

Almost surely, 221442023402355 is an apocalyptic number.

21442023402355 is a deficient number, since it is larger than the sum of its proper divisors (4288404680477).

21442023402355 is an equidigital number, since it uses as much as digits as its factorization.

21442023402355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4288404680476.

The product of its (nonzero) digits is 230400, while the sum is 37.

Adding to 21442023402355 its reverse (55320432024412), we get a palindrome (76762455426767).

The spelling of 21442023402355 in words is "twenty-one trillion, four hundred forty-two billion, twenty-three million, four hundred two thousand, three hundred fifty-five".

Divisors: 1 5 4288404680471 21442023402355