1655120193651 has 16 divisors (see below), whose sum is σ = 2511835525920. Its totient is φ = 1076500938240.

The previous prime is 1655120193593. The next prime is 1655120193667. The reversal of 1655120193651 is 1563910215561.

1655120193651 is a `hidden beast` number, since 1 + 6 + 551 + 2 + 0 + 1 + 93 + 6 + 5 + 1 = 666.

It is not a de Polignac number, because 1655120193651 - 2³¹ = 1652972710003 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1655120193597 and 1655120193606.

It is not an unprimeable number, because it can be changed into a prime (1655120192651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 747568990 + ... + 747571203.

It is an arithmetic number, because the mean of its divisors is an integer number (156989720370).

Almost surely, 2^{1655120193651} is an apocalyptic number.

1655120193651 is a deficient number, since it is larger than the sum of its proper divisors (856715332269).

1655120193651 is a wasteful number, since it uses less digits than its factorization.

1655120193651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495140243 (or 1495140237 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The spelling of 1655120193651 in words is "one trillion, six hundred fifty-five billion, one hundred twenty million, one hundred ninety-three thousand, six hundred fifty-one".