49780458971 has 2 divisors, whose sum is σ = 49780458972. Its totient is φ = 49780458970.

The previous prime is 49780458943. The next prime is 49780459013. The reversal of 49780458971 is 17985408794.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49780458971 is a prime.

It is not a weakly prime, because it can be changed into another prime (49780458941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24890229485 + 24890229486.

It is an arithmetic number, because the mean of its divisors is an integer number (24890229486).

Almost surely, 2^49780458971 is an apocalyptic number.

49780458971 is a deficient number, since it is larger than the sum of its proper divisors (1).

49780458971 is an equidigital number, since it uses as much as digits as its factorization.

49780458971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20321280, while the sum is 62.

The spelling of 49780458971 in words is "forty-nine billion, seven hundred eighty million, four hundred fifty-eight thousand, nine hundred seventy-one".