257270079406 has 8 divisors (see below), whose sum is σ = 385908028344. Its totient is φ = 128634069960.

The previous prime is 257270079401. The next prime is 257270079427. The reversal of 257270079406 is 604970072752.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 257270079406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257270079401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88420 + ... + 722743.

It is an arithmetic number, because the mean of its divisors is an integer number (48238503543).

Almost surely, 2^257270079406 is an apocalyptic number.

257270079406 is a deficient number, since it is larger than the sum of its proper divisors (128637948938).

257270079406 is a wasteful number, since it uses less digits than its factorization.

257270079406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969746.

The product of its (nonzero) digits is 1481760, while the sum is 49.

The spelling of 257270079406 in words is "two hundred fifty-seven billion, two hundred seventy million, seventy-nine thousand, four hundred six".