137942758646 has 16 divisors (see below), whose sum is σ = 257970873600. Its totient is φ = 53743931880.

The previous prime is 137942758643. The next prime is 137942758649. The reversal of 137942758646 is 646857249731.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (137942758643) and next prime (137942758649).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137942758643) 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, 447865946 + ... + 447866253.

It is an arithmetic number, because the mean of its divisors is an integer number (16123179600).

Almost surely, 2^137942758646 is an apocalyptic number.

137942758646 is a deficient number, since it is larger than the sum of its proper divisors (120028114954).

137942758646 is a wasteful number, since it uses less digits than its factorization.

137942758646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895732219.

The product of its digits is 60963840, while the sum is 62.

The spelling of 137942758646 in words is "one hundred thirty-seven billion, nine hundred forty-two million, seven hundred fifty-eight thousand, six hundred forty-six".