49970128997 has 2 divisors, whose sum is σ = 49970128998. Its totient is φ = 49970128996.

The previous prime is 49970128973. The next prime is 49970129047. The reversal of 49970128997 is 79982107994.

49970128997 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., 26624122561 + 23346006436 = 163169^2 + 152794^2 .

It is a cyclic number.

It is not a de Polignac number, because 49970128997 - 2¹² = 49970124901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49970128907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24985064498 + 24985064499.

It is an arithmetic number, because the mean of its divisors is an integer number (24985064499).

Almost surely, 2^49970128997 is an apocalyptic number.

It is an amenable number.

49970128997 is a deficient number, since it is larger than the sum of its proper divisors (1).

49970128997 is an equidigital number, since it uses as much as digits as its factorization.

49970128997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20575296, while the sum is 65.

The spelling of 49970128997 in words is "forty-nine billion, nine hundred seventy million, one hundred twenty-eight thousand, nine hundred ninety-seven".