823155755516 has 6 divisors (see below), whose sum is σ = 1440522572160. Its totient is φ = 411577877756.

The previous prime is 823155755507. The next prime is 823155755519. The reversal of 823155755516 is 615557551328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823155755519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102894469436 + ... + 102894469443.

It is an arithmetic number, because the mean of its divisors is an integer number (240087095360).

Almost surely, 2^823155755516 is an apocalyptic number.

It is an amenable number.

823155755516 is a deficient number, since it is larger than the sum of its proper divisors (617366816644).

823155755516 is a wasteful number, since it uses less digits than its factorization.

823155755516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205788938883 (or 205788938881 counting only the distinct ones).

The product of its digits is 6300000, while the sum is 53.

The spelling of 823155755516 in words is "eight hundred twenty-three billion, one hundred fifty-five million, seven hundred fifty-five thousand, five hundred sixteen".