34278513157 has 6 divisors (see below), whose sum is σ = 39875005158. Its totient is φ = 29381582664.

The previous prime is 34278513131. The next prime is 34278513161. The reversal of 34278513157 is 75131587243.

It can be written as a sum of positive squares in only one way, i.e., 22509300961 + 11769212196 = 150031^2 + 108486^2 .

It is not a de Polignac number, because 34278513157 - 2⁷ = 34278513029 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 (34278513107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 349780698 + ... + 349780795.

It is an arithmetic number, because the mean of its divisors is an integer number (6645834193).

Almost surely, 2^34278513157 is an apocalyptic number.

It is an amenable number.

34278513157 is a deficient number, since it is larger than the sum of its proper divisors (5596492001).

34278513157 is an equidigital number, since it uses as much as digits as its factorization.

34278513157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699561507 (or 699561500 counting only the distinct ones).

The product of its digits is 705600, while the sum is 46.

The spelling of 34278513157 in words is "thirty-four billion, two hundred seventy-eight million, five hundred thirteen thousand, one hundred fifty-seven".