155406246165641 has 32 divisors (see below), whose sum is σ = 160308079776000. Its totient is φ = 150596201697280.

The previous prime is 155406246165637. The next prime is 155406246165659. The reversal of 155406246165641 is 146561642604551.

It is a cyclic number.

It is not a de Polignac number, because 155406246165641 - 2² = 155406246165637 is a prime.

It is a super-2 number, since 2×155406246165641² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155406246165631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4710262841 + ... + 4710295833.

It is an arithmetic number, because the mean of its divisors is an integer number (5009627493000).

Almost surely, 2^{155406246165641} is an apocalyptic number.

It is an amenable number.

155406246165641 is a deficient number, since it is larger than the sum of its proper divisors (4901833610359).

155406246165641 is a wasteful number, since it uses less digits than its factorization.

155406246165641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37249.

The product of its (nonzero) digits is 20736000, while the sum is 56.

The spelling of 155406246165641 in words is "one hundred fifty-five trillion, four hundred six billion, two hundred forty-six million, one hundred sixty-five thousand, six hundred forty-one".