71998015349 has 8 divisors (see below), whose sum is σ = 79186033920. Its totient is φ = 65045669616.

The previous prime is 71998015303. The next prime is 71998015367. The reversal of 71998015349 is 94351089917.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71998015349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71998015294 and 71998015303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71998015379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58917569 + ... + 58918790.

It is an arithmetic number, because the mean of its divisors is an integer number (9898254240).

Almost surely, 2^71998015349 is an apocalyptic number.

It is an amenable number.

71998015349 is a deficient number, since it is larger than the sum of its proper divisors (7188018571).

71998015349 is a wasteful number, since it uses less digits than its factorization.

71998015349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117836419.

The product of its (nonzero) digits is 2449440, while the sum is 56.

The spelling of 71998015349 in words is "seventy-one billion, nine hundred ninety-eight million, fifteen thousand, three hundred forty-nine".