71987575344051 has 16 divisors (see below), whose sum is σ = 98290860506784. Its totient is φ = 46847196474624.

The previous prime is 71987575344029. The next prime is 71987575344137. The reversal of 71987575344051 is 15044357578917.

It is not a de Polignac number, because 71987575344051 - 2¹⁷ = 71987575212979 is a prime.

It is a super-2 number, since 2×71987575344051² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71987575344151) 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, 1149085546 + ... + 1149148191.

It is an arithmetic number, because the mean of its divisors is an integer number (6143178781674).

Almost surely, 2^{71987575344051} is an apocalyptic number.

71987575344051 is a deficient number, since it is larger than the sum of its proper divisors (26303285162733).

71987575344051 is a wasteful number, since it uses less digits than its factorization.

71987575344051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2298233990.

The product of its (nonzero) digits is 148176000, while the sum is 66.

The spelling of 71987575344051 in words is "seventy-one trillion, nine hundred eighty-seven billion, five hundred seventy-five million, three hundred forty-four thousand, fifty-one".