73820653285 has 8 divisors (see below), whose sum is σ = 88586850456. Its totient is φ = 59055144960.

The previous prime is 73820653219. The next prime is 73820653289. The reversal of 73820653285 is 58235602837.

It can be written as a sum of positive squares in 4 ways, for example, as 43824491649 + 29996161636 = 209343^2 + 173194^2 .

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

It is not a de Polignac number, because 73820653285 - 2⁷ = 73820653157 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 (73820653289) 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, 103765 + ... + 398005.

It is an arithmetic number, because the mean of its divisors is an integer number (11073356307).

Almost surely, 2^73820653285 is an apocalyptic number.

It is an amenable number.

73820653285 is a deficient number, since it is larger than the sum of its proper divisors (14766197171).

73820653285 is a wasteful number, since it uses less digits than its factorization.

73820653285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344423.

The product of its (nonzero) digits is 2419200, while the sum is 49.

The spelling of 73820653285 in words is "seventy-three billion, eight hundred twenty million, six hundred fifty-three thousand, two hundred eighty-five".