155305868653 has 24 divisors (see below), whose sum is σ = 177077534400. Its totient is φ = 135771876864.

The previous prime is 155305868639. The next prime is 155305868689. The reversal of 155305868653 is 356868503551.

It is a happy number.

It is not a de Polignac number, because 155305868653 - 2¹³ = 155305860461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155305868594 and 155305868603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155305868603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15019101 + ... + 15029437.

It is an arithmetic number, because the mean of its divisors is an integer number (7378230600).

Almost surely, 2^155305868653 is an apocalyptic number.

155305868653 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

155305868653 is a deficient number, since it is larger than the sum of its proper divisors (21771665747).

155305868653 is a wasteful number, since it uses less digits than its factorization.

155305868653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15061 (or 15048 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 55.

The spelling of 155305868653 in words is "one hundred fifty-five billion, three hundred five million, eight hundred sixty-eight thousand, six hundred fifty-three".