137212394602 has 4 divisors (see below), whose sum is σ = 205818591906. Its totient is φ = 68606197300.

The previous prime is 137212394591. The next prime is 137212394651. The reversal of 137212394602 is 206493212731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 97424512641 + 39787881961 = 312129^2 + 199469^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34303098649 + ... + 34303098652.

Almost surely, 2^137212394602 is an apocalyptic number.

137212394602 is a deficient number, since it is larger than the sum of its proper divisors (68606197304).

137212394602 is an equidigital number, since it uses as much as digits as its factorization.

137212394602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68606197303.

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 137212394602 in words is "one hundred thirty-seven billion, two hundred twelve million, three hundred ninety-four thousand, six hundred two".