155845159464993 has 24 divisors (see below), whose sum is σ = 220874259336480. Its totient is φ = 97472904672960.

The previous prime is 155845159464989. The next prime is 155845159465001. The reversal of 155845159464993 is 399464951548551.

155845159464993 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155845159464993 - 2² = 155845159464989 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155845159474993) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128254068 + ... + 129463493.

It is an arithmetic number, because the mean of its divisors is an integer number (9203094139020).

Almost surely, 2^{155845159464993} is an apocalyptic number.

It is an amenable number.

155845159464993 is a deficient number, since it is larger than the sum of its proper divisors (65029099871487).

155845159464993 is a wasteful number, since it uses less digits than its factorization.

155845159464993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257717789 (or 257717686 counting only the distinct ones).

The product of its digits is 4199040000, while the sum is 78.

The spelling of 155845159464993 in words is "one hundred fifty-five trillion, eight hundred forty-five billion, one hundred fifty-nine million, four hundred sixty-four thousand, nine hundred ninety-three".