137421645364 has 6 divisors (see below), whose sum is σ = 240487879394. Its totient is φ = 68710822680.

The previous prime is 137421645323. The next prime is 137421645367. The reversal of 137421645364 is 463546124731.

It can be written as a sum of positive squares in only one way, i.e., 115900755364 + 21520890000 = 340442^2 + 146700^2 .

It is a super-2 number, since 2×137421645364² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137421645367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17177705667 + ... + 17177705674.

Almost surely, 2^137421645364 is an apocalyptic number.

It is an amenable number.

137421645364 is a deficient number, since it is larger than the sum of its proper divisors (103066234030).

137421645364 is a wasteful number, since it uses less digits than its factorization.

137421645364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34355411345 (or 34355411343 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 46.

The spelling of 137421645364 in words is "one hundred thirty-seven billion, four hundred twenty-one million, six hundred forty-five thousand, three hundred sixty-four".