257271902073 has 6 divisors (see below), whose sum is σ = 371614969674. Its totient is φ = 171514601376.

The previous prime is 257271902057. The next prime is 257271902159. The reversal of 257271902073 is 370209172752.

257271902073 is a `hidden beast` number, since 2 + 572 + 7 + 1 + 9 + 0 + 2 + 0 + 73 = 666.

It can be written as a sum of positive squares in only one way, i.e., 257198079609 + 73822464 = 507147^2 + 8592^2 .

It is not a de Polignac number, because 257271902073 - 2⁴ = 257271902057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (257271902023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14292883440 + ... + 14292883457.

It is an arithmetic number, because the mean of its divisors is an integer number (61935828279).

Almost surely, 2^257271902073 is an apocalyptic number.

It is an amenable number.

257271902073 is a deficient number, since it is larger than the sum of its proper divisors (114343067601).

257271902073 is a wasteful number, since it uses less digits than its factorization.

257271902073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28585766903 (or 28585766900 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 45.

The spelling of 257271902073 in words is "two hundred fifty-seven billion, two hundred seventy-one million, nine hundred two thousand, seventy-three".