498778232656 has 40 divisors (see below), whose sum is σ = 1054707494400. Its totient is φ = 226615941120.

The previous prime is 498778232653. The next prime is 498778232671. The reversal of 498778232656 is 656232877894.

It is a junction number, because it is equal to n+sod(n) for n = 498778232591 and 498778232600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (498778232653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238801 + ... + 1026928.

It is an arithmetic number, because the mean of its divisors is an integer number (26367687360).

Almost surely, 2^498778232656 is an apocalyptic number.

It is an amenable number.

498778232656 is an abundant number, since it is smaller than the sum of its proper divisors (555929261744).

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

498778232656 is a wasteful number, since it uses less digits than its factorization.

498778232656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267987 (or 1267981 counting only the distinct ones).

The product of its digits is 243855360, while the sum is 67.

The spelling of 498778232656 in words is "four hundred ninety-eight billion, seven hundred seventy-eight million, two hundred thirty-two thousand, six hundred fifty-six".