823935778264152 has 96 divisors (see below), whose sum is σ = 2303485417733760. Its totient is φ = 265784690880000.

The previous prime is 823935778264139. The next prime is 823935778264171. The reversal of 823935778264152 is 251462877539328.

It is a happy number.

823935778264152 is a `hidden beast` number, since 8 + 2 + 3 + 9 + 3 + 577 + 8 + 2 + 6 + 41 + 5 + 2 = 666.

It is a super-3 number, since 3×823935778264152³ (a number of 46 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 734662702 + ... + 735783362.

It is an arithmetic number, because the mean of its divisors is an integer number (23994639768060).

Almost surely, 2^{823935778264152} is an apocalyptic number.

It is an amenable number.

823935778264152 is an abundant number, since it is smaller than the sum of its proper divisors (1479549639469608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

823935778264152 is a wasteful number, since it uses less digits than its factorization.

823935778264152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450105 (or 1450098 counting only the distinct ones).

The product of its digits is 1219276800, while the sum is 72.

The spelling of 823935778264152 in words is "eight hundred twenty-three trillion, nine hundred thirty-five billion, seven hundred seventy-eight million, two hundred sixty-four thousand, one hundred fifty-two".