137086195861 has 4 divisors (see below), whose sum is σ = 139016987424. Its totient is φ = 135155404300.

The previous prime is 137086195849. The next prime is 137086195963. The reversal of 137086195861 is 168591680731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 137086195861 - 2⁷ = 137086195733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137086195811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965395675 + ... + 965395816.

It is an arithmetic number, because the mean of its divisors is an integer number (34754246856).

Almost surely, 2^137086195861 is an apocalyptic number.

It is an amenable number.

137086195861 is a deficient number, since it is larger than the sum of its proper divisors (1930791563).

137086195861 is an equidigital number, since it uses as much as digits as its factorization.

137086195861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930791562.

The product of its (nonzero) digits is 2177280, while the sum is 55.

The spelling of 137086195861 in words is "one hundred thirty-seven billion, eighty-six million, one hundred ninety-five thousand, eight hundred sixty-one".