49999997953 has 2 divisors, whose sum is σ = 49999997954. Its totient is φ = 49999997952.

The previous prime is 49999997947. The next prime is 49999997977. The reversal of 49999997953 is 35979999994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28038832704 + 21961165249 = 167448^2 + 148193^2 .

It is a cyclic number.

It is not a de Polignac number, because 49999997953 - 2¹³ = 49999989761 is a prime.

It is not a weakly prime, because it can be changed into another prime (49999997923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24999998976 + 24999998977.

It is an arithmetic number, because the mean of its divisors is an integer number (24999998977).

Almost surely, 2^49999997953 is an apocalyptic number.

It is an amenable number.

49999997953 is a deficient number, since it is larger than the sum of its proper divisors (1).

49999997953 is an equidigital number, since it uses as much as digits as its factorization.

49999997953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2008846980, while the sum is 82.

The spelling of 49999997953 in words is "forty-nine billion, nine hundred ninety-nine million, nine hundred ninety-seven thousand, nine hundred fifty-three".