372556404655261 has 2 divisors, whose sum is σ = 372556404655262. Its totient is φ = 372556404655260.

The previous prime is 372556404655223. The next prime is 372556404655283. The reversal of 372556404655261 is 162556404655273.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213026722839225 + 159529681816036 = 14595435^2 + 12630506^2 .

It is a cyclic number.

It is not a de Polignac number, because 372556404655261 - 2¹³ = 372556404647069 is a prime.

It is a super-2 number, since 2×372556404655261² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 372556404655261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (372556404652261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186278202327630 + 186278202327631.

It is an arithmetic number, because the mean of its divisors is an integer number (186278202327631).

Almost surely, 2^{372556404655261} is an apocalyptic number.

It is an amenable number.

372556404655261 is a deficient number, since it is larger than the sum of its proper divisors (1).

372556404655261 is an equidigital number, since it uses as much as digits as its factorization.

372556404655261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440000, while the sum is 61.

The spelling of 372556404655261 in words is "three hundred seventy-two trillion, five hundred fifty-six billion, four hundred four million, six hundred fifty-five thousand, two hundred sixty-one".