137646770689 has 4 divisors (see below), whose sum is σ = 137655533124. Its totient is φ = 137638008256.

The previous prime is 137646770687. The next prime is 137646770743. The reversal of 137646770689 is 986077646731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 986077646731 = 3889 ⋅253555579.

It can be written as a sum of positive squares in 2 ways, for example, as 85619441664 + 52027329025 = 292608^2 + 228095^2 .

It is a cyclic number.

It is not a de Polignac number, because 137646770689 - 2¹ = 137646770687 is a prime.

It is a super-2 number, since 2×137646770689² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 137646770689.

It is not an unprimeable number, because it can be changed into a prime (137646770683) 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, 4357612 + ... + 4389085.

It is an arithmetic number, because the mean of its divisors is an integer number (34413883281).

Almost surely, 2^137646770689 is an apocalyptic number.

It is an amenable number.

137646770689 is a deficient number, since it is larger than the sum of its proper divisors (8762435).

137646770689 is an equidigital number, since it uses as much as digits as its factorization.

137646770689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8762434.

The product of its (nonzero) digits is 64012032, while the sum is 64.

The spelling of 137646770689 in words is "one hundred thirty-seven billion, six hundred forty-six million, seven hundred seventy thousand, six hundred eighty-nine".