71501000869 has 4 divisors (see below), whose sum is σ = 73807484800. Its totient is φ = 69194516940.

The previous prime is 71501000833. The next prime is 71501000873. The reversal of 71501000869 is 96800010517.

71501000869 = T₂₁₈₃₂₇ + T₂₁₈₃₂₈ + T₂₁₈₃₂₉.

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: 96800010517 = 7 ⋅13828572931.

It is a cyclic number.

It is not a de Polignac number, because 71501000869 - 2²¹ = 71498903717 is a prime.

It is a super-2 number, since 2×71501000869² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71501000899) 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, 1153241919 + ... + 1153241980.

It is an arithmetic number, because the mean of its divisors is an integer number (18451871200).

Almost surely, 2^71501000869 is an apocalyptic number.

71501000869 is the 218329-th centered triangular number.

It is an amenable number.

71501000869 is a deficient number, since it is larger than the sum of its proper divisors (2306483931).

71501000869 is a wasteful number, since it uses less digits than its factorization.

71501000869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306483930.

The product of its (nonzero) digits is 15120, while the sum is 37.

The spelling of 71501000869 in words is "seventy-one billion, five hundred one million, eight hundred sixty-nine", and thus it is an aban number.