617922195520372 has 6 divisors (see below), whose sum is σ = 1081363842160658. Its totient is φ = 308961097760184.

The previous prime is 617922195520361. The next prime is 617922195520417. The reversal of 617922195520372 is 273025591229716.

It can be written as a sum of positive squares in only one way, i.e., 616236238699236 + 1685956821136 = 24824106^2 + 1298444^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 617922195520372.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77240274440043 + ... + 77240274440050.

Almost surely, 2^{617922195520372} is an apocalyptic number.

It is an amenable number.

617922195520372 is a deficient number, since it is larger than the sum of its proper divisors (463441646640286).

617922195520372 is a wasteful number, since it uses less digits than its factorization.

617922195520372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154480548880097 (or 154480548880095 counting only the distinct ones).

The product of its (nonzero) digits is 28576800, while the sum is 61.

The spelling of 617922195520372 in words is "six hundred seventeen trillion, nine hundred twenty-two billion, one hundred ninety-five million, five hundred twenty thousand, three hundred seventy-two".