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BaseRepresentation
bin101100001111110100100001…
…0101011011110000110010101
31220001001101120222110020011001
41120133221002223132012111
5402003143122032330121
63455433051045343301
7144656643623531503
oct13037510253360625
91801041528406131
10389202465120661
11103014925089595
123779a066107b31
131392283408245a
146c176dd725673
152eee0b1534991

389202465120661 has 4 divisors (see below), whose sum is σ = 391779964889824. Its totient is φ = 386624965351500.

The previous prime is 389202465120613. The next prime is 389202465120673. The reversal of 389202465120661 is 166021564202983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 389202465120661 - 225 = 389202431566229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389202465120611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1288749884355 + ... + 1288749884656.

It is an arithmetic number, because the mean of its divisors is an integer number (97944991222456).

Almost surely, 2389202465120661 is an apocalyptic number.

It is an amenable number.

389202465120661 is a deficient number, since it is larger than the sum of its proper divisors (2577499769163).

389202465120661 is a wasteful number, since it uses less digits than its factorization.

389202465120661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577499769162.

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 389202465120661 in words is "three hundred eighty-nine trillion, two hundred two billion, four hundred sixty-five million, one hundred twenty thousand, six hundred sixty-one".

Divisors: 1 151 2577499769011 389202465120661