20461322346137 has 4 divisors (see below), whose sum is σ = 21121365002496. Its totient is φ = 19801279689780.

The previous prime is 20461322346107. The next prime is 20461322346349. The reversal of 20461322346137 is 73164322316402.

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 a de Polignac number, because none of the positive numbers 2^k-20461322346137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20461322346107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330021328133 + ... + 330021328194.

It is an arithmetic number, because the mean of its divisors is an integer number (5280341250624).

Almost surely, 2^{20461322346137} is an apocalyptic number.

It is an amenable number.

20461322346137 is a deficient number, since it is larger than the sum of its proper divisors (660042656359).

20461322346137 is an equidigital number, since it uses as much as digits as its factorization.

20461322346137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660042656358.

The product of its (nonzero) digits is 870912, while the sum is 44.

The spelling of 20461322346137 in words is "twenty trillion, four hundred sixty-one billion, three hundred twenty-two million, three hundred forty-six thousand, one hundred thirty-seven".