73745600621969 has 2 divisors, whose sum is σ = 73745600621970. Its totient is φ = 73745600621968.

The previous prime is 73745600621963. The next prime is 73745600622019. The reversal of 73745600621969 is 96912600654737.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68858463610000 + 4887137011969 = 8298100^2 + 2210687^2 .

It is a cyclic number.

It is not a de Polignac number, because 73745600621969 - 2⁴⁴ = 56153414577553 is a prime.

It is a super-2 number, since 2×73745600621969² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73745600621963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36872800310984 + 36872800310985.

It is an arithmetic number, because the mean of its divisors is an integer number (36872800310985).

Almost surely, 2^{73745600621969} is an apocalyptic number.

It is an amenable number.

73745600621969 is a deficient number, since it is larger than the sum of its proper divisors (1).

73745600621969 is an equidigital number, since it uses as much as digits as its factorization.

73745600621969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102876480, while the sum is 65.

The spelling of 73745600621969 in words is "seventy-three trillion, seven hundred forty-five billion, six hundred million, six hundred twenty-one thousand, nine hundred sixty-nine".