505651156505 has 16 divisors (see below), whose sum is σ = 662469192000. Its totient is φ = 367454151360.

The previous prime is 505651156489. The next prime is 505651156553.

505651156505 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 505651156505 - 2⁴ = 505651156489 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3581930 + ... + 3720419.

It is an arithmetic number, because the mean of its divisors is an integer number (41404324500).

Almost surely, 2^505651156505 is an apocalyptic number.

505651156505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

505651156505 is a deficient number, since it is larger than the sum of its proper divisors (156818035495).

505651156505 is a wasteful number, since it uses less digits than its factorization.

505651156505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7303624.

The product of its (nonzero) digits is 562500, while the sum is 44.

The spelling of 505651156505 in words is "five hundred five billion, six hundred fifty-one million, one hundred fifty-six thousand, five hundred five".