30402653421660 has 384 divisors, whose sum is σ = 93738814251264. Its totient is φ = 7316377436160.

The previous prime is 30402653421653. The next prime is 30402653421671. The reversal of 30402653421660 is 6612435620403.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 24981637372 + ... + 24981638588.

It is an arithmetic number, because the mean of its divisors is an integer number (244111495446).

Almost surely, 2^{30402653421660} is an apocalyptic number.

30402653421660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30402653421660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46869407125632).

30402653421660 is an abundant number, since it is smaller than the sum of its proper divisors (63336160829604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30402653421660 is a wasteful number, since it uses less digits than its factorization.

30402653421660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2953 (or 2951 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 30402653421660 in words is "thirty trillion, four hundred two billion, six hundred fifty-three million, four hundred twenty-one thousand, six hundred sixty".