74687603541409 has 2 divisors, whose sum is σ = 74687603541410. Its totient is φ = 74687603541408.

The previous prime is 74687603541359. The next prime is 74687603541437. The reversal of 74687603541409 is 90414530678647.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56492661145600 + 18194942395809 = 7516160^2 + 4265553^2 .

It is a cyclic number.

It is not a de Polignac number, because 74687603541409 - 2¹⁵ = 74687603508641 is a prime.

It is not a weakly prime, because it can be changed into another prime (74687603541209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37343801770704 + 37343801770705.

It is an arithmetic number, because the mean of its divisors is an integer number (37343801770705).

Almost surely, 2^{74687603541409} is an apocalyptic number.

It is an amenable number.

74687603541409 is a deficient number, since it is larger than the sum of its proper divisors (1).

74687603541409 is an equidigital number, since it uses as much as digits as its factorization.

74687603541409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 121927680, while the sum is 64.

The spelling of 74687603541409 in words is "seventy-four trillion, six hundred eighty-seven billion, six hundred three million, five hundred forty-one thousand, four hundred nine".