155461771547 has 16 divisors (see below), whose sum is σ = 171046391040. Its totient is φ = 140637944832.

The previous prime is 155461771477. The next prime is 155461771559. The reversal of 155461771547 is 745177164551.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 155461771547 - 2¹² = 155461767451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155461771447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 597098 + ... + 816975.

It is an arithmetic number, because the mean of its divisors is an integer number (10690399440).

Almost surely, 2^155461771547 is an apocalyptic number.

155461771547 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

155461771547 is a deficient number, since it is larger than the sum of its proper divisors (15584619493).

155461771547 is a wasteful number, since it uses less digits than its factorization.

155461771547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414342.

The product of its digits is 4116000, while the sum is 53.

The spelling of 155461771547 in words is "one hundred fifty-five billion, four hundred sixty-one million, seven hundred seventy-one thousand, five hundred forty-seven".