30261667961 has 4 divisors (see below), whose sum is σ = 34584763392. Its totient is φ = 25938572532.

The previous prime is 30261667927. The next prime is 30261667979. The reversal of 30261667961 is 16976616203.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16976616203 = 28283 ⋅600241.

It is a cyclic number.

It is not a de Polignac number, because 30261667961 - 2¹⁸ = 30261405817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30261667991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2161547705 + ... + 2161547718.

It is an arithmetic number, because the mean of its divisors is an integer number (8646190848).

Almost surely, 2^30261667961 is an apocalyptic number.

It is an amenable number.

30261667961 is a deficient number, since it is larger than the sum of its proper divisors (4323095431).

30261667961 is an equidigital number, since it uses as much as digits as its factorization.

30261667961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4323095430.

The product of its (nonzero) digits is 489888, while the sum is 47.

The spelling of 30261667961 in words is "thirty billion, two hundred sixty-one million, six hundred sixty-seven thousand, nine hundred sixty-one".