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13621653431 is a prime number
BaseRepresentation
bin11001010111110100…
…11110111110110111
31022011022112200122122
430223322132332313
5210344120402211
610131355150155
7661362100211
oct145372367667
938138480578
1013621653431
115860082921
122781a4535b
13139110c479
1493314b5b1
1554acea6db
hex32be9efb7

13621653431 has 2 divisors, whose sum is σ = 13621653432. Its totient is φ = 13621653430.

The previous prime is 13621653407. The next prime is 13621653499. The reversal of 13621653431 is 13435612631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13621653431 - 222 = 13617459127 is a prime.

It is a super-2 number, since 2×136216534312 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13621653391 and 13621653400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13621653931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6810826715 + 6810826716.

It is an arithmetic number, because the mean of its divisors is an integer number (6810826716).

Almost surely, 213621653431 is an apocalyptic number.

13621653431 is a deficient number, since it is larger than the sum of its proper divisors (1).

13621653431 is an equidigital number, since it uses as much as digits as its factorization.

13621653431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 35.

The spelling of 13621653431 in words is "thirteen billion, six hundred twenty-one million, six hundred fifty-three thousand, four hundred thirty-one".