70661221150157 has 16 divisors (see below), whose sum is σ = 77179806631872. Its totient is φ = 64158464373120.

The previous prime is 70661221150151. The next prime is 70661221150187. The reversal of 70661221150157 is 75105112216607.

It is a cyclic number.

It is not a de Polignac number, because 70661221150157 - 2³⁸ = 70386343243213 is a prime.

It is a super-2 number, since 2×70661221150157² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70661221150151) 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, 63069818 + ... + 64180404.

It is an arithmetic number, because the mean of its divisors is an integer number (4823737914492).

Almost surely, 2^{70661221150157} is an apocalyptic number.

It is an amenable number.

70661221150157 is a deficient number, since it is larger than the sum of its proper divisors (6518585481715).

70661221150157 is a wasteful number, since it uses less digits than its factorization.

70661221150157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117708.

The product of its (nonzero) digits is 176400, while the sum is 44.

The spelling of 70661221150157 in words is "seventy trillion, six hundred sixty-one billion, two hundred twenty-one million, one hundred fifty thousand, one hundred fifty-seven".