30402653421661 has 8 divisors (see below), whose sum is σ = 30540562916864. Its totient is φ = 30264757986960.

The previous prime is 30402653421653. The next prime is 30402653421671. The reversal of 30402653421661 is 16612435620403.

It is a happy number.

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 30402653421661 - 2³ = 30402653421653 is a prime.

It is a super-2 number, since 2×30402653421661² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30402653421671) 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, 831391 + ... + 7841971.

It is an arithmetic number, because the mean of its divisors is an integer number (3817570364608).

Almost surely, 2^{30402653421661} is an apocalyptic number.

It is an amenable number.

30402653421661 is a deficient number, since it is larger than the sum of its proper divisors (137909495203).

30402653421661 is a wasteful number, since it uses less digits than its factorization.

30402653421661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7030251.

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 30402653421661 in words is "thirty trillion, four hundred two billion, six hundred fifty-three million, four hundred twenty-one thousand, six hundred sixty-one".