1979630372501 has 2 divisors, whose sum is σ = 1979630372502. Its totient is φ = 1979630372500.

The previous prime is 1979630372483. The next prime is 1979630372507. The reversal of 1979630372501 is 1052730369791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1680367764100 + 299262608401 = 1296290^2 + 547049^2 .

It is an emirp because it is prime and its reverse (1052730369791) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1979630372501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1979630372507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989815186250 + 989815186251.

It is an arithmetic number, because the mean of its divisors is an integer number (989815186251).

Almost surely, 2^{1979630372501} is an apocalyptic number.

It is an amenable number.

1979630372501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1979630372501 is an equidigital number, since it uses as much as digits as its factorization.

1979630372501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2143260, while the sum is 53.

The spelling of 1979630372501 in words is "one trillion, nine hundred seventy-nine billion, six hundred thirty million, three hundred seventy-two thousand, five hundred one".