48991008463861 has 2 divisors, whose sum is σ = 48991008463862. Its totient is φ = 48991008463860.

The previous prime is 48991008463853. The next prime is 48991008463883. The reversal of 48991008463861 is 16836480019984.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39803859540900 + 9187148922961 = 6309030^2 + 3031031^2 .

It is a cyclic number.

It is not a de Polignac number, because 48991008463861 - 2³ = 48991008463853 is a prime.

It is a super-2 number, since 2×48991008463861² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48991008463801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24495504231930 + 24495504231931.

It is an arithmetic number, because the mean of its divisors is an integer number (24495504231931).

Almost surely, 2^{48991008463861} is an apocalyptic number.

It is an amenable number.

48991008463861 is a deficient number, since it is larger than the sum of its proper divisors (1).

48991008463861 is an equidigital number, since it uses as much as digits as its factorization.

48991008463861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71663616, while the sum is 67.

The spelling of 48991008463861 in words is "forty-eight trillion, nine hundred ninety-one billion, eight million, four hundred sixty-three thousand, eight hundred sixty-one".