139007666212 has 6 divisors (see below), whose sum is σ = 243263415878. Its totient is φ = 69503833104.

The previous prime is 139007666191. The next prime is 139007666219. The reversal of 139007666212 is 212666700931.

It can be written as a sum of positive squares in only one way, i.e., 136032618276 + 2975047936 = 368826^2 + 54544^2 .

It is not an unprimeable number, because it can be changed into a prime (139007666219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17375958273 + ... + 17375958280.

Almost surely, 2^139007666212 is an apocalyptic number.

It is an amenable number.

139007666212 is a deficient number, since it is larger than the sum of its proper divisors (104255749666).

139007666212 is a wasteful number, since it uses less digits than its factorization.

139007666212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34751916557 (or 34751916555 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 139007666212 in words is "one hundred thirty-nine billion, seven million, six hundred sixty-six thousand, two hundred twelve".