71550156001 has 4 divisors (see below), whose sum is σ = 71576473600. Its totient is φ = 71523838404.

The previous prime is 71550155987. The next prime is 71550156023. The reversal of 71550156001 is 10065105517.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10065105517 = 277 ⋅36336121.

It is a cyclic number.

It is not a de Polignac number, because 71550156001 - 2¹⁷ = 71550024929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71554156001) 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 3 ways as a sum of consecutive naturals, for example, 13154721 + ... + 13160158.

It is an arithmetic number, because the mean of its divisors is an integer number (17894118400).

Almost surely, 2^71550156001 is an apocalyptic number.

It is an amenable number.

71550156001 is a deficient number, since it is larger than the sum of its proper divisors (26317599).

71550156001 is a wasteful number, since it uses less digits than its factorization.

71550156001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26317598.

The product of its (nonzero) digits is 5250, while the sum is 31.

The spelling of 71550156001 in words is "seventy-one billion, five hundred fifty million, one hundred fifty-six thousand, one".