155471867551 has 48 divisors (see below), whose sum is σ = 210103020288. Its totient is φ = 111715718400.

The previous prime is 155471867483. The next prime is 155471867563. The reversal of 155471867551 is 155768174551.

It is not a de Polignac number, because 155471867551 - 2¹³ = 155471859359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155471867492 and 155471867501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155471867651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14269816 + ... + 14280706.

It is an arithmetic number, because the mean of its divisors is an integer number (4377146256).

Almost surely, 2^155471867551 is an apocalyptic number.

155471867551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

155471867551 is a deficient number, since it is larger than the sum of its proper divisors (54631152737).

155471867551 is a wasteful number, since it uses less digits than its factorization.

155471867551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12032 (or 12019 counting only the distinct ones).

The product of its digits is 5880000, while the sum is 55.

The spelling of 155471867551 in words is "one hundred fifty-five billion, four hundred seventy-one million, eight hundred sixty-seven thousand, five hundred fifty-one".