70221903939 has 32 divisors (see below), whose sum is σ = 119463110400. Its totient is φ = 40318793280.

The previous prime is 70221903887. The next prime is 70221903943. The reversal of 70221903939 is 93930912207.

It is a happy number.

70221903939 is a `hidden beast` number, since 70 + 2 + 2 + 190 + 393 + 9 = 666.

It is not a de Polignac number, because 70221903939 - 2¹² = 70221899843 is a prime.

It is a super-2 number, since 2×70221903939² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70221903894 and 70221903903.

It is not an unprimeable number, because it can be changed into a prime (70221903949) 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, 6216394 + ... + 6227679.

It is an arithmetic number, because the mean of its divisors is an integer number (3733222200).

Almost surely, 2^70221903939 is an apocalyptic number.

70221903939 is a deficient number, since it is larger than the sum of its proper divisors (49241206461).

70221903939 is a wasteful number, since it uses less digits than its factorization.

70221903939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12444112 (or 12444106 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The spelling of 70221903939 in words is "seventy billion, two hundred twenty-one million, nine hundred three thousand, nine hundred thirty-nine".