137304387561 has 16 divisors (see below), whose sum is σ = 200572632000. Its totient is φ = 82857630720.

The previous prime is 137304387557. The next prime is 137304387569. The reversal of 137304387561 is 165783403731.

It is not a de Polignac number, because 137304387561 - 2² = 137304387557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 137304387561.

It is not an unprimeable number, because it can be changed into a prime (137304387569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8920936 + ... + 8936313.

It is an arithmetic number, because the mean of its divisors is an integer number (12535789500).

Almost surely, 2^137304387561 is an apocalyptic number.

137304387561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

137304387561 is a deficient number, since it is larger than the sum of its proper divisors (63268244439).

137304387561 is a wasteful number, since it uses less digits than its factorization.

137304387561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17857496.

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 137304387561 in words is "one hundred thirty-seven billion, three hundred four million, three hundred eighty-seven thousand, five hundred sixty-one".