263425566761 has 8 divisors (see below), whose sum is σ = 301070689920. Its totient is φ = 225783668448.

The previous prime is 263425566751. The next prime is 263425566791. The reversal of 263425566761 is 167665524362.

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

It is a cyclic number.

It is not a de Polignac number, because 263425566761 - 2²⁶ = 263358457897 is a prime.

It is a super-2 number, since 2×263425566761² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (263425566731) 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, 628556 + ... + 960173.

It is an arithmetic number, because the mean of its divisors is an integer number (37633836240).

Almost surely, 2^263425566761 is an apocalyptic number.

It is an amenable number.

263425566761 is a deficient number, since it is larger than the sum of its proper divisors (37645123159).

263425566761 is a wasteful number, since it uses less digits than its factorization.

263425566761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612423.

The product of its digits is 10886400, while the sum is 53.

The spelling of 263425566761 in words is "two hundred sixty-three billion, four hundred twenty-five million, five hundred sixty-six thousand, seven hundred sixty-one".