1473653640721 has 8 divisors (see below), whose sum is σ = 1480937852160. Its totient is φ = 1466377630752.

The previous prime is 1473653640659. The next prime is 1473653640733. The reversal of 1473653640721 is 1270463563741.

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 1473653640721 - 2⁷ = 1473653640593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1473653640761) 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, 1689961 + ... + 2408998.

It is an arithmetic number, because the mean of its divisors is an integer number (185117231520).

Almost surely, 2^{1473653640721} is an apocalyptic number.

It is an amenable number.

1473653640721 is a deficient number, since it is larger than the sum of its proper divisors (7284211439).

1473653640721 is a wasteful number, since it uses less digits than its factorization.

1473653640721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100735.

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 1473653640721 in words is "one trillion, four hundred seventy-three billion, six hundred fifty-three million, six hundred forty thousand, seven hundred twenty-one".