Search a number
-
+
10219969087 is a prime number
BaseRepresentation
bin10011000010010100…
…00101101000111111
3222101020200012222121
421201022011220333
5131412303002322
64410041223411
7511155206146
oct114112055077
928336605877
1010219969087
1143749a7049
121b92791b67
13c6b446ab3
146cd46275d
153ec35dec7
hex261285a3f

10219969087 has 2 divisors, whose sum is σ = 10219969088. Its totient is φ = 10219969086.

The previous prime is 10219969079. The next prime is 10219969093. The reversal of 10219969087 is 78096991201.

It is a strong prime.

It is an emirp because it is prime and its reverse (78096991201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10219969087 - 23 = 10219969079 is a prime.

It is a super-2 number, since 2×102199690872 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10219969027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5109984543 + 5109984544.

It is an arithmetic number, because the mean of its divisors is an integer number (5109984544).

Almost surely, 210219969087 is an apocalyptic number.

10219969087 is a deficient number, since it is larger than the sum of its proper divisors (1).

10219969087 is an equidigital number, since it uses as much as digits as its factorization.

10219969087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 52.

The spelling of 10219969087 in words is "ten billion, two hundred nineteen million, nine hundred sixty-nine thousand, eighty-seven".