155421051313 has 32 divisors (see below), whose sum is σ = 182165760000. Its totient is φ = 131253433920.

The previous prime is 155421051271. The next prime is 155421051329. The reversal of 155421051313 is 313150124551.

It is not a de Polignac number, because 155421051313 - 2³⁷ = 17982097841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155421057313) 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 31 ways as a sum of consecutive naturals, for example, 796738 + ... + 972436.

It is an arithmetic number, because the mean of its divisors is an integer number (5692680000).

Almost surely, 2^155421051313 is an apocalyptic number.

It is an amenable number.

155421051313 is a deficient number, since it is larger than the sum of its proper divisors (26744708687).

155421051313 is a wasteful number, since it uses less digits than its factorization.

155421051313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175845.

The product of its (nonzero) digits is 9000, while the sum is 31.

Adding to 155421051313 its reverse (313150124551), we get a palindrome (468571175864).

The spelling of 155421051313 in words is "one hundred fifty-five billion, four hundred twenty-one million, fifty-one thousand, three hundred thirteen".