155892668781 has 16 divisors (see below), whose sum is σ = 211284338048. Its totient is φ = 102215044800.

The previous prime is 155892668741. The next prime is 155892668791. The reversal of 155892668781 is 187866298551.

It is not a de Polignac number, because 155892668781 - 2⁶ = 155892668717 is a prime.

It is a super-2 number, since 2×155892668781² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155892668741) 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, 2261040 + ... + 2328966.

It is an arithmetic number, because the mean of its divisors is an integer number (13205271128).

Almost surely, 2^155892668781 is an apocalyptic number.

It is an amenable number.

155892668781 is a deficient number, since it is larger than the sum of its proper divisors (55391669267).

155892668781 is a wasteful number, since it uses less digits than its factorization.

155892668781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80532.

The product of its digits is 58060800, while the sum is 66.

The spelling of 155892668781 in words is "one hundred fifty-five billion, eight hundred ninety-two million, six hundred sixty-eight thousand, seven hundred eighty-one".