30879954797 has 2 divisors, whose sum is σ = 30879954798. Its totient is φ = 30879954796.

The previous prime is 30879954757. The next prime is 30879954817. The reversal of 30879954797 is 79745997803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28333642276 + 2546312521 = 168326^2 + 50461^2 .

It is an emirp because it is prime and its reverse (79745997803) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30879954797 - 2⁸ = 30879954541 is a prime.

It is a super-2 number, since 2×30879954797² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30879954757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15439977398 + 15439977399.

It is an arithmetic number, because the mean of its divisors is an integer number (15439977399).

Almost surely, 2^30879954797 is an apocalyptic number.

It is an amenable number.

30879954797 is a deficient number, since it is larger than the sum of its proper divisors (1).

30879954797 is an equidigital number, since it uses as much as digits as its factorization.

30879954797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120022560, while the sum is 68.

The spelling of 30879954797 in words is "thirty billion, eight hundred seventy-nine million, nine hundred fifty-four thousand, seven hundred ninety-seven".