139835310691 has 8 divisors (see below), whose sum is σ = 145923160320. Its totient is φ = 133748132232.

The previous prime is 139835310683. The next prime is 139835310707. The reversal of 139835310691 is 196013538931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139835310691 - 2³ = 139835310683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139835310091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283866 + ... + 600208.

It is an arithmetic number, because the mean of its divisors is an integer number (18240395040).

Almost surely, 2^139835310691 is an apocalyptic number.

139835310691 is a deficient number, since it is larger than the sum of its proper divisors (6087849629).

139835310691 is a wasteful number, since it uses less digits than its factorization.

139835310691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335585.

The product of its (nonzero) digits is 524880, while the sum is 49.

The spelling of 139835310691 in words is "one hundred thirty-nine billion, eight hundred thirty-five million, three hundred ten thousand, six hundred ninety-one".