372825913661 has 2 divisors, whose sum is σ = 372825913662. Its totient is φ = 372825913660.

The previous prime is 372825913651. The next prime is 372825913693. The reversal of 372825913661 is 166319528273.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 297712096900 + 75113816761 = 545630^2 + 274069^2 .

It is a cyclic number.

It is not a de Polignac number, because 372825913661 - 2⁶ = 372825913597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (372825913651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186412956830 + 186412956831.

It is an arithmetic number, because the mean of its divisors is an integer number (186412956831).

Almost surely, 2^372825913661 is an apocalyptic number.

It is an amenable number.

372825913661 is a deficient number, since it is larger than the sum of its proper divisors (1).

372825913661 is an equidigital number, since it uses as much as digits as its factorization.

372825913661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 53.

The spelling of 372825913661 in words is "three hundred seventy-two billion, eight hundred twenty-five million, nine hundred thirteen thousand, six hundred sixty-one".