71601453278 has 4 divisors (see below), whose sum is σ = 107402179920. Its totient is φ = 35800726638.

The previous prime is 71601453263. The next prime is 71601453293. The reversal of 71601453278 is 87235410617.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87235410617 = 89 ⋅980173153.

It is an interprime number because it is at equal distance from previous prime (71601453263) and next prime (71601453293).

It is a super-2 number, since 2×71601453278² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17900363318 + ... + 17900363321.

It is an arithmetic number, because the mean of its divisors is an integer number (26850544980).

Almost surely, 2^71601453278 is an apocalyptic number.

71601453278 is a deficient number, since it is larger than the sum of its proper divisors (35800726642).

71601453278 is a wasteful number, since it uses less digits than its factorization.

71601453278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35800726641.

The product of its (nonzero) digits is 282240, while the sum is 44.

The spelling of 71601453278 in words is "seventy-one billion, six hundred one million, four hundred fifty-three thousand, two hundred seventy-eight".