71842748515 has 4 divisors (see below), whose sum is σ = 86211298224. Its totient is φ = 57474198808.

The previous prime is 71842748507. The next prime is 71842748557. The reversal of 71842748515 is 51584724817.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71842748515 - 2³ = 71842748507 is a prime.

It is a super-2 number, since 2×71842748515² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7184274847 + ... + 7184274856.

It is an arithmetic number, because the mean of its divisors is an integer number (21552824556).

Almost surely, 2^71842748515 is an apocalyptic number.

71842748515 is a deficient number, since it is larger than the sum of its proper divisors (14368549709).

71842748515 is a wasteful number, since it uses less digits than its factorization.

71842748515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14368549708.

The product of its digits is 2508800, while the sum is 52.

The spelling of 71842748515 in words is "seventy-one billion, eight hundred forty-two million, seven hundred forty-eight thousand, five hundred fifteen".