1372211663461 has 2 divisors, whose sum is σ = 1372211663462. Its totient is φ = 1372211663460.

The previous prime is 1372211663419. The next prime is 1372211663477. The reversal of 1372211663461 is 1643661122731.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 812567030625 + 559644632836 = 901425^2 + 748094^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372211663461 - 2²¹ = 1372209566309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1372211663401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686105831730 + 686105831731.

It is an arithmetic number, because the mean of its divisors is an integer number (686105831731).

Almost surely, 2^{1372211663461} is an apocalyptic number.

It is an amenable number.

1372211663461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372211663461 is an equidigital number, since it uses as much as digits as its factorization.

1372211663461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The spelling of 1372211663461 in words is "one trillion, three hundred seventy-two billion, two hundred eleven million, six hundred sixty-three thousand, four hundred sixty-one".