7374727272721 has 8 divisors (see below), whose sum is σ = 7375988609640. Its totient is φ = 7373466067968.

The previous prime is 7374727272707. The next prime is 7374727272733. The reversal of 7374727272721 is 1272727274737.

It can be written as a sum of positive squares in 4 ways, for example, as 154892622096 + 7219834650625 = 393564^2 + 2686975^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7374727272721 - 2⁷ = 7374727272593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7374727272751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194068095 + ... + 194106091.

It is an arithmetic number, because the mean of its divisors is an integer number (921998576205).

Almost surely, 2^{7374727272721} is an apocalyptic number.

It is an amenable number.

7374727272721 is a deficient number, since it is larger than the sum of its proper divisors (1261336919).

7374727272721 is a wasteful number, since it uses less digits than its factorization.

7374727272721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66083.

The product of its digits is 22588608, while the sum is 58.

The spelling of 7374727272721 in words is "seven trillion, three hundred seventy-four billion, seven hundred twenty-seven million, two hundred seventy-two thousand, seven hundred twenty-one".