74574489301649 has 4 divisors (see below), whose sum is σ = 74617771073136. Its totient is φ = 74531207530164.

The previous prime is 74574489301601. The next prime is 74574489301673. The reversal of 74574489301649 is 94610398447547.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74574489301649 - 2¹⁶ = 74574489236113 is a prime.

It is a super-2 number, since 2×74574489301649² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74574489301699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21640883159 + ... + 21640886604.

It is an arithmetic number, because the mean of its divisors is an integer number (18654442768284).

Almost surely, 2^{74574489301649} is an apocalyptic number.

It is an amenable number.

74574489301649 is a deficient number, since it is larger than the sum of its proper divisors (43281771487).

74574489301649 is a wasteful number, since it uses less digits than its factorization.

74574489301649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43281771486.

The product of its (nonzero) digits is 731566080, while the sum is 71.

The spelling of 74574489301649 in words is "seventy-four trillion, five hundred seventy-four billion, four hundred eighty-nine million, three hundred one thousand, six hundred forty-nine".