30621310653 has 16 divisors (see below), whose sum is σ = 41238489600. Its totient is φ = 20209915440.

The previous prime is 30621310649. The next prime is 30621310663. The reversal of 30621310653 is 35601312603.

It is a happy number.

It is not a de Polignac number, because 30621310653 - 2² = 30621310649 is a prime.

It is a super-2 number, since 2×30621310653² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30621310653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30621310663) 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, 71688 + ... + 257646.

It is an arithmetic number, because the mean of its divisors is an integer number (2577405600).

Almost surely, 2^30621310653 is an apocalyptic number.

It is an amenable number.

30621310653 is a deficient number, since it is larger than the sum of its proper divisors (10617178947).

30621310653 is a wasteful number, since it uses less digits than its factorization.

30621310653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186512.

The product of its (nonzero) digits is 9720, while the sum is 30.

The spelling of 30621310653 in words is "thirty billion, six hundred twenty-one million, three hundred ten thousand, six hundred fifty-three".