74980721438911 has 16 divisors (see below), whose sum is σ = 76982591172960. Its totient is φ = 73000655503360.

The previous prime is 74980721438893. The next prime is 74980721438921. The reversal of 74980721438911 is 11983412708947.

It is a cyclic number.

It is not a de Polignac number, because 74980721438911 - 2⁷ = 74980721438783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74980721438921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139487391 + ... + 140023903.

It is an arithmetic number, because the mean of its divisors is an integer number (4811411948310).

Almost surely, 2^{74980721438911} is an apocalyptic number.

74980721438911 is a deficient number, since it is larger than the sum of its proper divisors (2001869734049).

74980721438911 is a wasteful number, since it uses less digits than its factorization.

74980721438911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556826.

The product of its (nonzero) digits is 24385536, while the sum is 64.

The spelling of 74980721438911 in words is "seventy-four trillion, nine hundred eighty billion, seven hundred twenty-one million, four hundred thirty-eight thousand, nine hundred eleven".