1623552770655 has 24 divisors (see below), whose sum is σ = 2815236974160. Its totient is φ = 865562860800.

The previous prime is 1623552770633. The next prime is 1623552770867. The reversal of 1623552770655 is 5560772553261.

1623552770655 is a `hidden beast` number, since 1 + 6 + 23 + 552 + 7 + 7 + 0 + 65 + 5 = 666.

It is not a de Polignac number, because 1623552770655 - 2¹⁵ = 1623552737887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6796921 + ... + 7031730.

It is an arithmetic number, because the mean of its divisors is an integer number (117301540590).

Almost surely, 2^{1623552770655} is an apocalyptic number.

1623552770655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1623552770655 is a deficient number, since it is larger than the sum of its proper divisors (1191684203505).

1623552770655 is a wasteful number, since it uses less digits than its factorization.

1623552770655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13831271 (or 13831268 counting only the distinct ones).

The product of its (nonzero) digits is 13230000, while the sum is 54.

The spelling of 1623552770655 in words is "one trillion, six hundred twenty-three billion, five hundred fifty-two million, seven hundred seventy thousand, six hundred fifty-five".