53097893378978 has 54 divisors (see below), whose sum is σ = 92878664877171. Its totient is φ = 22700314057344.

The previous prime is 53097893378939. The next prime is 53097893378987. The reversal of 53097893378978 is 87987339879035.

It can be written as a sum of positive squares in 5 ways, for example, as 1789797135889 + 51308096243089 = 1337833^2 + 7162967^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5152567.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53097893378978.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 44507873150 + ... + 44507874342.

Almost surely, 2^{53097893378978} is an apocalyptic number.

53097893378978 is a deficient number, since it is larger than the sum of its proper divisors (39780771498193).

53097893378978 is an frugal number, since it uses more digits than its factorization.

53097893378978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3636 (or 1819 counting only the distinct ones).

The product of its (nonzero) digits is 17283248640, while the sum is 86.

The spelling of 53097893378978 in words is "fifty-three trillion, ninety-seven billion, eight hundred ninety-three million, three hundred seventy-eight thousand, nine hundred seventy-eight".