715345021561 has 8 divisors (see below), whose sum is σ = 740511132480. Its totient is φ = 690212180112.

The previous prime is 715345021549. The next prime is 715345021571. The reversal of 715345021561 is 165120543517.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 715345021561 - 2⁹ = 715345021049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (715345021571) 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, 8273605 + ... + 8359618.

It is an arithmetic number, because the mean of its divisors is an integer number (92563891560).

Almost surely, 2^715345021561 is an apocalyptic number.

It is an amenable number.

715345021561 is a deficient number, since it is larger than the sum of its proper divisors (25166110919).

715345021561 is a wasteful number, since it uses less digits than its factorization.

715345021561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16634735.

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 715345021561 in words is "seven hundred fifteen billion, three hundred forty-five million, twenty-one thousand, five hundred sixty-one".