71428757143 has 4 divisors (see below), whose sum is σ = 72434796048. Its totient is φ = 70422718240.

The previous prime is 71428757129. The next prime is 71428757201. The reversal of 71428757143 is 34175782417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34175782417 = 7 ⋅4882254631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71428757143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71428754143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503019346 + ... + 503019487.

It is an arithmetic number, because the mean of its divisors is an integer number (18108699012).

Almost surely, 2^71428757143 is an apocalyptic number.

71428757143 is a deficient number, since it is larger than the sum of its proper divisors (1006038905).

71428757143 is a wasteful number, since it uses less digits than its factorization.

71428757143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006038904.

The product of its digits is 1317120, while the sum is 49.

The spelling of 71428757143 in words is "seventy-one billion, four hundred twenty-eight million, seven hundred fifty-seven thousand, one hundred forty-three".