137854782157 has 2 divisors, whose sum is σ = 137854782158. Its totient is φ = 137854782156.

The previous prime is 137854782089. The next prime is 137854782173. The reversal of 137854782157 is 751287458731.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98076075241 + 39778706916 = 313171^2 + 199446^2 .

It is a cyclic number.

It is not a de Polignac number, because 137854782157 - 2⁷ = 137854782029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137854782187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68927391078 + 68927391079.

It is an arithmetic number, because the mean of its divisors is an integer number (68927391079).

Almost surely, 2^137854782157 is an apocalyptic number.

It is an amenable number.

137854782157 is a deficient number, since it is larger than the sum of its proper divisors (1).

137854782157 is an equidigital number, since it uses as much as digits as its factorization.

137854782157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13171200, while the sum is 58.

The spelling of 137854782157 in words is "one hundred thirty-seven billion, eight hundred fifty-four million, seven hundred eighty-two thousand, one hundred fifty-seven".