21190158465031 has 2 divisors, whose sum is σ = 21190158465032. Its totient is φ = 21190158465030.

The previous prime is 21190158464947. The next prime is 21190158465103. The reversal of 21190158465031 is 13056485109112.

Together with next prime (21190158465103) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21190158465031 - 2⁷ = 21190158464903 is a prime.

It is a super-2 number, since 2×21190158465031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21190153465031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10595079232515 + 10595079232516.

It is an arithmetic number, because the mean of its divisors is an integer number (10595079232516).

Almost surely, 2^{21190158465031} is an apocalyptic number.

21190158465031 is a deficient number, since it is larger than the sum of its proper divisors (1).

21190158465031 is an equidigital number, since it uses as much as digits as its factorization.

21190158465031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 46.

The spelling of 21190158465031 in words is "twenty-one trillion, one hundred ninety billion, one hundred fifty-eight million, four hundred sixty-five thousand, thirty-one".