155543977473 has 8 divisors (see below), whose sum is σ = 207418980288. Its totient is φ = 103682479824.

The previous prime is 155543977439. The next prime is 155543977579. The reversal of 155543977473 is 374779345551.

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

It is not a de Polignac number, because 155543977473 - 2¹⁶ = 155543911937 is a prime.

It is a super-2 number, since 2×155543977473² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155543977273) 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, 3349386 + ... + 3395507.

It is an arithmetic number, because the mean of its divisors is an integer number (25927372536).

Almost surely, 2^155543977473 is an apocalyptic number.

It is an amenable number.

155543977473 is a deficient number, since it is larger than the sum of its proper divisors (51875002815).

155543977473 is an equidigital number, since it uses as much as digits as its factorization.

155543977473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6752583.

The product of its digits is 55566000, while the sum is 60.

The spelling of 155543977473 in words is "one hundred fifty-five billion, five hundred forty-three million, nine hundred seventy-seven thousand, four hundred seventy-three".