22155429437 has 2 divisors, whose sum is σ = 22155429438. Its totient is φ = 22155429436.

The previous prime is 22155429343. The next prime is 22155429451. The reversal of 22155429437 is 73492455122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19060287481 + 3095141956 = 138059^2 + 55634^2 .

It is a cyclic number.

It is not a de Polignac number, because 22155429437 - 2¹⁴ = 22155413053 is a prime.

It is a super-2 number, since 2×22155429437² (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 (22155420437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11077714718 + 11077714719.

It is an arithmetic number, because the mean of its divisors is an integer number (11077714719).

Almost surely, 2^22155429437 is an apocalyptic number.

It is an amenable number.

22155429437 is a deficient number, since it is larger than the sum of its proper divisors (1).

22155429437 is an equidigital number, since it uses as much as digits as its factorization.

22155429437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 44.

The spelling of 22155429437 in words is "twenty-two billion, one hundred fifty-five million, four hundred twenty-nine thousand, four hundred thirty-seven".