705042151301721 has 32 divisors (see below), whose sum is σ = 1026883861430400. Its totient is φ = 428578697756160.

The previous prime is 705042151301701. The next prime is 705042151301731. The reversal of 705042151301721 is 127103151240507.

It is not a de Polignac number, because 705042151301721 - 2⁵ = 705042151301689 is a prime.

It is a super-2 number, since 2×705042151301721² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 705042151301721.

It is not an unprimeable number, because it can be changed into a prime (705042151301701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 672224860 + ... + 673272861.

It is an arithmetic number, because the mean of its divisors is an integer number (32090120669700).

Almost surely, 2^{705042151301721} is an apocalyptic number.

It is an amenable number.

705042151301721 is a deficient number, since it is larger than the sum of its proper divisors (321841710128679).

705042151301721 is a wasteful number, since it uses less digits than its factorization.

705042151301721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345498089.

The product of its (nonzero) digits is 58800, while the sum is 39.

The spelling of 705042151301721 in words is "seven hundred five trillion, forty-two billion, one hundred fifty-one million, three hundred one thousand, seven hundred twenty-one".