137438953634 has 16 divisors (see below), whose sum is σ = 208497884760. Its totient is φ = 67939829760.

The previous prime is 137438953591. The next prime is 137438953657. The reversal of 137438953634 is 436359834731.

It can be written as a sum of positive squares in 4 ways, for example, as 68724195409 + 68714758225 = 262153^2 + 262135^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 137438953634.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1791014 + ... + 1866174.

Almost surely, 2^137438953634 is an apocalyptic number.

137438953634 is a deficient number, since it is larger than the sum of its proper divisors (71058931126).

137438953634 is a wasteful number, since it uses less digits than its factorization.

137438953634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85525.

The product of its digits is 19595520, while the sum is 56.

The spelling of 137438953634 in words is "one hundred thirty-seven billion, four hundred thirty-eight million, nine hundred fifty-three thousand, six hundred thirty-four".