155865223833641 has 8 divisors (see below), whose sum is σ = 178156142998464. Its totient is φ = 133580419323120.

The previous prime is 155865223833619. The next prime is 155865223833643. The reversal of 155865223833641 is 146338322568551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155865223833641 - 2¹⁴ = 155865223817257 is a prime.

It is a super-2 number, since 2×155865223833641² (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 (155865223833643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1528608950 + ... + 1528710911.

It is an arithmetic number, because the mean of its divisors is an integer number (22269517874808).

Almost surely, 2^{155865223833641} is an apocalyptic number.

It is an amenable number.

155865223833641 is a deficient number, since it is larger than the sum of its proper divisors (22290919164823).

155865223833641 is an equidigital number, since it uses as much as digits as its factorization.

155865223833641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3057327151.

The product of its digits is 124416000, while the sum is 62.

The spelling of 155865223833641 in words is "one hundred fifty-five trillion, eight hundred sixty-five billion, two hundred twenty-three million, eight hundred thirty-three thousand, six hundred forty-one".