72653602620461 has 4 divisors (see below), whose sum is σ = 73059488668800. Its totient is φ = 72247716572124.

The previous prime is 72653602620439. The next prime is 72653602620583. The reversal of 72653602620461 is 16402620635627.

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 72653602620461 - 2⁴² = 68255556109357 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 (72653602220461) 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, 202943023901 + ... + 202943024258.

It is an arithmetic number, because the mean of its divisors is an integer number (18264872167200).

Almost surely, 2^{72653602620461} is an apocalyptic number.

It is an amenable number.

72653602620461 is a deficient number, since it is larger than the sum of its proper divisors (405886048339).

72653602620461 is a wasteful number, since it uses less digits than its factorization.

72653602620461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405886048338.

The product of its (nonzero) digits is 4354560, while the sum is 50.

The spelling of 72653602620461 in words is "seventy-two trillion, six hundred fifty-three billion, six hundred two million, six hundred twenty thousand, four hundred sixty-one".