137721261103 has 4 divisors (see below), whose sum is σ = 137733788808. Its totient is φ = 137708733400.

The previous prime is 137721261089. The next prime is 137721261131. The reversal of 137721261103 is 301162127731.

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

It is a cyclic number.

It is not a de Polignac number, because 137721261103 - 2⁵ = 137721261071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137721261163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6247348 + ... + 6269353.

It is an arithmetic number, because the mean of its divisors is an integer number (34433447202).

Almost surely, 2^137721261103 is an apocalyptic number.

137721261103 is a deficient number, since it is larger than the sum of its proper divisors (12527705).

137721261103 is a wasteful number, since it uses less digits than its factorization.

137721261103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12527704.

The product of its (nonzero) digits is 10584, while the sum is 34.

Adding to 137721261103 its reverse (301162127731), we get a palindrome (438883388834).

The spelling of 137721261103 in words is "one hundred thirty-seven billion, seven hundred twenty-one million, two hundred sixty-one thousand, one hundred three".