155416323503 has 16 divisors (see below), whose sum is σ = 178957008960. Its totient is φ = 132210683136.

The previous prime is 155416323497. The next prime is 155416323527. The reversal of 155416323503 is 305323614551.

It is not a de Polignac number, because 155416323503 - 2⁴ = 155416323487 is a prime.

It is a super-2 number, since 2×155416323503² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155416323593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4691225 + ... + 4724237.

It is an arithmetic number, because the mean of its divisors is an integer number (11184813060).

Almost surely, 2^155416323503 is an apocalyptic number.

155416323503 is a deficient number, since it is larger than the sum of its proper divisors (23540685457).

155416323503 is a wasteful number, since it uses less digits than its factorization.

155416323503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38066.

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 155416323503 in words is "one hundred fifty-five billion, four hundred sixteen million, three hundred twenty-three thousand, five hundred three".