137666724550 has 24 divisors (see below), whose sum is σ = 260257820112. Its totient is φ = 54163956000.

The previous prime is 137666724527. The next prime is 137666724581. The reversal of 137666724550 is 55427666731.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22565266 + ... + 22571365.

It is an arithmetic number, because the mean of its divisors is an integer number (10844075838).

Almost surely, 2^137666724550 is an apocalyptic number.

137666724550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137666724550 is a deficient number, since it is larger than the sum of its proper divisors (122591095562).

137666724550 is a wasteful number, since it uses less digits than its factorization.

137666724550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45136704 (or 45136699 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 52.

The spelling of 137666724550 in words is "one hundred thirty-seven billion, six hundred sixty-six million, seven hundred twenty-four thousand, five hundred fifty".