372051217981 has 2 divisors, whose sum is σ = 372051217982. Its totient is φ = 372051217980.

The previous prime is 372051217961. The next prime is 372051218029. The reversal of 372051217981 is 189712150273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 367921099225 + 4130118756 = 606565^2 + 64266^2 .

It is a cyclic number.

It is not a de Polignac number, because 372051217981 - 2⁵ = 372051217949 is a prime.

It is a super-2 number, since 2×372051217981² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (372051217961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186025608990 + 186025608991.

It is an arithmetic number, because the mean of its divisors is an integer number (186025608991).

Almost surely, 2^372051217981 is an apocalyptic number.

It is an amenable number.

372051217981 is a deficient number, since it is larger than the sum of its proper divisors (1).

372051217981 is an equidigital number, since it uses as much as digits as its factorization.

372051217981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 46.

The spelling of 372051217981 in words is "three hundred seventy-two billion, fifty-one million, two hundred seventeen thousand, nine hundred eighty-one".