30478137901 has 2 divisors, whose sum is σ = 30478137902. Its totient is φ = 30478137900.

The previous prime is 30478137857. The next prime is 30478137953. The reversal of 30478137901 is 10973187403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29627015625 + 851122276 = 172125^2 + 29174^2 .

It is a cyclic number.

It is not a de Polignac number, because 30478137901 - 2¹⁷ = 30478006829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30478137961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15239068950 + 15239068951.

It is an arithmetic number, because the mean of its divisors is an integer number (15239068951).

Almost surely, 2^30478137901 is an apocalyptic number.

It is an amenable number.

30478137901 is a deficient number, since it is larger than the sum of its proper divisors (1).

30478137901 is an equidigital number, since it uses as much as digits as its factorization.

30478137901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 30478137901 in words is "thirty billion, four hundred seventy-eight million, one hundred thirty-seven thousand, nine hundred one".