82215747461 has 8 divisors (see below), whose sum is σ = 84154328544. Its totient is φ = 80278374960.

The previous prime is 82215747413. The next prime is 82215747487. The reversal of 82215747461 is 16474751228.

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-82215747461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82215740461) 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, 163751 + ... + 437316.

It is an arithmetic number, because the mean of its divisors is an integer number (10519291068).

Almost surely, 2^82215747461 is an apocalyptic number.

It is an amenable number.

82215747461 is a deficient number, since it is larger than the sum of its proper divisors (1938581083).

82215747461 is a wasteful number, since it uses less digits than its factorization.

82215747461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604291.

The product of its digits is 752640, while the sum is 47.

The spelling of 82215747461 in words is "eighty-two billion, two hundred fifteen million, seven hundred forty-seven thousand, four hundred sixty-one".