70742287690 has 16 divisors (see below), whose sum is σ = 128596873320. Its totient is φ = 28016747200.

The previous prime is 70742287661. The next prime is 70742287703. The reversal of 70742287690 is 9678224707.

It can be written as a sum of positive squares in 4 ways, for example, as 68198800201 + 2543487489 = 261149^2 + 50433^2 .

It is a super-2 number, since 2×70742287690² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35019925 + ... + 35021944.

Almost surely, 2^70742287690 is an apocalyptic number.

70742287690 is a deficient number, since it is larger than the sum of its proper divisors (57854585630).

70742287690 is a wasteful number, since it uses less digits than its factorization.

70742287690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70041977.

The product of its (nonzero) digits is 2370816, while the sum is 52.

The spelling of 70742287690 in words is "seventy billion, seven hundred forty-two million, two hundred eighty-seven thousand, six hundred ninety".