372166227551 has 2 divisors, whose sum is σ = 372166227552. Its totient is φ = 372166227550.

The previous prime is 372166227541. The next prime is 372166227647. The reversal of 372166227551 is 155722661273.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 372166227551 - 2¹⁴ = 372166211167 is a prime.

It is a super-2 number, since 2×372166227551² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 372166227496 and 372166227505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (372166227541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186083113775 + 186083113776.

It is an arithmetic number, because the mean of its divisors is an integer number (186083113776).

Almost surely, 2^372166227551 is an apocalyptic number.

372166227551 is a deficient number, since it is larger than the sum of its proper divisors (1).

372166227551 is an equidigital number, since it uses as much as digits as its factorization.

372166227551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 47.

The spelling of 372166227551 in words is "three hundred seventy-two billion, one hundred sixty-six million, two hundred twenty-seven thousand, five hundred fifty-one".