137487801685 has 8 divisors (see below), whose sum is σ = 177676543800. Its totient is φ = 101529453504.

The previous prime is 137487801683. The next prime is 137487801701. The reversal of 137487801685 is 586108784731.

It can be written as a sum of positive squares in 4 ways, for example, as 352836 + 137487448849 = 594^2 + 370793^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 137487801685 - 2¹ = 137487801683 is a prime.

It is a super-2 number, since 2×137487801685² (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 (137487801683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1057598410 + ... + 1057598539.

It is an arithmetic number, because the mean of its divisors is an integer number (22209567975).

Almost surely, 2^137487801685 is an apocalyptic number.

It is an amenable number.

137487801685 is a deficient number, since it is larger than the sum of its proper divisors (40188742115).

137487801685 is a wasteful number, since it uses less digits than its factorization.

137487801685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115196967.

The product of its (nonzero) digits is 9031680, while the sum is 58.

The spelling of 137487801685 in words is "one hundred thirty-seven billion, four hundred eighty-seven million, eight hundred one thousand, six hundred eighty-five".