70240505506721 has 16 divisors (see below), whose sum is σ = 77317010635200. Its totient is φ = 63281412803520.

The previous prime is 70240505506631. The next prime is 70240505506729. The reversal of 70240505506721 is 12760550504207.

It is a cyclic number.

It is not a de Polignac number, because 70240505506721 - 2²² = 70240501312417 is a prime.

It is a super-2 number, since 2×70240505506721² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70240505506729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55498670 + ... + 56750183.

It is an arithmetic number, because the mean of its divisors is an integer number (4832313164700).

Almost surely, 2^{70240505506721} is an apocalyptic number.

It is an amenable number.

70240505506721 is a deficient number, since it is larger than the sum of its proper divisors (7076505128479).

70240505506721 is a wasteful number, since it uses less digits than its factorization.

70240505506721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112249376.

The product of its (nonzero) digits is 588000, while the sum is 44.

The spelling of 70240505506721 in words is "seventy trillion, two hundred forty billion, five hundred five million, five hundred six thousand, seven hundred twenty-one".