263351427020555 has 8 divisors (see below), whose sum is σ = 316034022075552. Its totient is φ = 210672935182528.

The previous prime is 263351427020501. The next prime is 263351427020573. The reversal of 263351427020555 is 555020724153362.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263351427020555 is a prime.

It is a super-2 number, since 2×263351427020555² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1025663039 + ... + 1025919768.

It is an arithmetic number, because the mean of its divisors is an integer number (39504252759444).

Almost surely, 2^{263351427020555} is an apocalyptic number.

263351427020555 is a deficient number, since it is larger than the sum of its proper divisors (52682595054997).

263351427020555 is a wasteful number, since it uses less digits than its factorization.

263351427020555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051608485.

The product of its (nonzero) digits is 7560000, while the sum is 50.

The spelling of 263351427020555 in words is "two hundred sixty-three trillion, three hundred fifty-one billion, four hundred twenty-seven million, twenty thousand, five hundred fifty-five".