137944581642 has 48 divisors (see below), whose sum is σ = 341949029760. Its totient is φ = 39369818016.

The previous prime is 137944581629. The next prime is 137944581647. The reversal of 137944581642 is 246185449731.

137944581642 is a `hidden beast` number, since 1 + 37 + 9 + 445 + 8 + 164 + 2 = 666.

It is a super-5 number, since 5×137944581642⁵ (a number of 57 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (137944581647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 479853 + ... + 711440.

It is an arithmetic number, because the mean of its divisors is an integer number (7123938120).

Almost surely, 2^137944581642 is an apocalyptic number.

137944581642 is an abundant number, since it is smaller than the sum of its proper divisors (204004448118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

137944581642 is a wasteful number, since it uses less digits than its factorization.

137944581642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192227 (or 1192224 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 137944581642 in words is "one hundred thirty-seven billion, nine hundred forty-four million, five hundred eighty-one thousand, six hundred forty-two".