74879801533 has 2 divisors, whose sum is σ = 74879801534. Its totient is φ = 74879801532.

The previous prime is 74879801501. The next prime is 74879801639. The reversal of 74879801533 is 33510897847.

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., 45308528164 + 29571273369 = 212858^2 + 171963^2 .

It is a cyclic number.

It is not a de Polignac number, because 74879801533 - 2⁵ = 74879801501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74879801333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37439900766 + 37439900767.

It is an arithmetic number, because the mean of its divisors is an integer number (37439900767).

Almost surely, 2^74879801533 is an apocalyptic number.

It is an amenable number.

74879801533 is a deficient number, since it is larger than the sum of its proper divisors (1).

74879801533 is an equidigital number, since it uses as much as digits as its factorization.

74879801533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 74879801533 in words is "seventy-four billion, eight hundred seventy-nine million, eight hundred one thousand, five hundred thirty-three".