357312020854421 has 2 divisors, whose sum is σ = 357312020854422. Its totient is φ = 357312020854420.

The previous prime is 357312020854337. The next prime is 357312020854429. The reversal of 357312020854421 is 124458020213753.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226585132035025 + 130726888819396 = 15052745^2 + 11433586^2 .

It is a cyclic number.

It is not a de Polignac number, because 357312020854421 - 2³⁰ = 357310947112597 is a prime.

It is a super-2 number, since 2×357312020854421² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (357312020854429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178656010427210 + 178656010427211.

It is an arithmetic number, because the mean of its divisors is an integer number (178656010427211).

Almost surely, 2^{357312020854421} is an apocalyptic number.

It is an amenable number.

357312020854421 is a deficient number, since it is larger than the sum of its proper divisors (1).

357312020854421 is an equidigital number, since it uses as much as digits as its factorization.

357312020854421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1612800, while the sum is 47.

The spelling of 357312020854421 in words is "three hundred fifty-seven trillion, three hundred twelve billion, twenty million, eight hundred fifty-four thousand, four hundred twenty-one".