137403635785 has 12 divisors (see below), whose sum is σ = 178543423692. Its totient is φ = 101467299648.

The previous prime is 137403635777. The next prime is 137403635807. The reversal of 137403635785 is 587536304731.

It can be written as a sum of positive squares in 6 ways, for example, as 12255375616 + 125148260169 = 110704^2 + 353763^2 .

It is not a de Polignac number, because 137403635785 - 2³ = 137403635777 is a prime.

It is a Duffinian 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, 81303082 + ... + 81304771.

It is an arithmetic number, because the mean of its divisors is an integer number (14878618641).

Almost surely, 2^137403635785 is an apocalyptic number.

It is an amenable number.

137403635785 is a deficient number, since it is larger than the sum of its proper divisors (41139787907).

137403635785 is a wasteful number, since it uses less digits than its factorization.

137403635785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162607884 (or 162607871 counting only the distinct ones).

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

The spelling of 137403635785 in words is "one hundred thirty-seven billion, four hundred three million, six hundred thirty-five thousand, seven hundred eighty-five".