164477992451137 has 4 divisors (see below), whose sum is σ = 164478018412116. Its totient is φ = 164477966490160.

The previous prime is 164477992451119. The next prime is 164477992451153. The reversal of 164477992451137 is 731154299774461.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 90180074549761 + 74297917901376 = 9496319^2 + 8619624^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164477992451137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164477992454137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3484587 + ... + 18468847.

It is an arithmetic number, because the mean of its divisors is an integer number (41119504603029).

Almost surely, 2^{164477992451137} is an apocalyptic number.

It is an amenable number.

164477992451137 is a deficient number, since it is larger than the sum of its proper divisors (25960979).

164477992451137 is a wasteful number, since it uses less digits than its factorization.

164477992451137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25960978.

The product of its digits is 320060160, while the sum is 70.

The spelling of 164477992451137 in words is "one hundred sixty-four trillion, four hundred seventy-seven billion, nine hundred ninety-two million, four hundred fifty-one thousand, one hundred thirty-seven".