139661335435 has 8 divisors (see below), whose sum is σ = 171681251616. Its totient is φ = 109003968960.

The previous prime is 139661335423. The next prime is 139661335453. The reversal of 139661335435 is 534533166931.

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

It is not a de Polignac number, because 139661335435 - 2²¹ = 139659238283 is a prime.

It is a Duffinian number.

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, 340637199 + ... + 340637608.

It is an arithmetic number, because the mean of its divisors is an integer number (21460156452).

Almost surely, 2^139661335435 is an apocalyptic number.

139661335435 is a deficient number, since it is larger than the sum of its proper divisors (32019916181).

139661335435 is an equidigital number, since it uses as much as digits as its factorization.

139661335435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681274853.

The product of its digits is 2624400, while the sum is 49.

The spelling of 139661335435 in words is "one hundred thirty-nine billion, six hundred sixty-one million, three hundred thirty-five thousand, four hundred thirty-five".