1257161104959 has 8 divisors (see below), whose sum is σ = 1683408862512. Its totient is φ = 834510375360.

The previous prime is 1257161104933. The next prime is 1257161104967. The reversal of 1257161104959 is 9594011617521.

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

It is not a de Polignac number, because 1257161104959 - 2¹⁵ = 1257161072191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257161104919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 899256172 + ... + 899257569.

It is an arithmetic number, because the mean of its divisors is an integer number (210426107814).

Almost surely, 2^{1257161104959} is an apocalyptic number.

1257161104959 is a deficient number, since it is larger than the sum of its proper divisors (426247757553).

1257161104959 is a wasteful number, since it uses less digits than its factorization.

1257161104959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798513977.

The product of its (nonzero) digits is 680400, while the sum is 51.

The spelling of 1257161104959 in words is "one trillion, two hundred fifty-seven billion, one hundred sixty-one million, one hundred four thousand, nine hundred fifty-nine".