30277525189991 has 2 divisors, whose sum is σ = 30277525189992. Its totient is φ = 30277525189990.

The previous prime is 30277525189981. The next prime is 30277525190021. The reversal of 30277525189991 is 19998152577203.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30277525189991 is a prime.

It is a super-4 number, since 4×30277525189991⁴ (a number of 55 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30277525189981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15138762594995 + 15138762594996.

It is an arithmetic number, because the mean of its divisors is an integer number (15138762594996).

Almost surely, 2^{30277525189991} is an apocalyptic number.

30277525189991 is a deficient number, since it is larger than the sum of its proper divisors (1).

30277525189991 is an equidigital number, since it uses as much as digits as its factorization.

30277525189991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85730400, while the sum is 68.

The spelling of 30277525189991 in words is "thirty trillion, two hundred seventy-seven billion, five hundred twenty-five million, one hundred eighty-nine thousand, nine hundred ninety-one".