49739781197 has 2 divisors, whose sum is σ = 49739781198. Its totient is φ = 49739781196.

The previous prime is 49739781173. The next prime is 49739781239. The reversal of 49739781197 is 79118793794.

49739781197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46429044676 + 3310736521 = 215474^2 + 57539^2 .

It is a cyclic number.

It is not a de Polignac number, because 49739781197 - 2¹⁴ = 49739764813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49739781127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24869890598 + 24869890599.

It is an arithmetic number, because the mean of its divisors is an integer number (24869890599).

Almost surely, 2^49739781197 is an apocalyptic number.

It is an amenable number.

49739781197 is a deficient number, since it is larger than the sum of its proper divisors (1).

49739781197 is an equidigital number, since it uses as much as digits as its factorization.

49739781197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24004512, while the sum is 65.

The spelling of 49739781197 in words is "forty-nine billion, seven hundred thirty-nine million, seven hundred eighty-one thousand, one hundred ninety-seven".