65157274741 has 4 divisors (see below), whose sum is σ = 70169372812. Its totient is φ = 60145176672.

The previous prime is 65157274697. The next prime is 65157274757. The reversal of 65157274741 is 14747275156.

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

It can be written as a sum of positive squares in 2 ways, for example, as 42881712241 + 22275562500 = 207079^2 + 149250^2 .

It is a cyclic number.

It is not a de Polignac number, because 65157274741 - 2¹⁵ = 65157241973 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 (65157214741) 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, 2506049016 + ... + 2506049041.

It is an arithmetic number, because the mean of its divisors is an integer number (17542343203).

Almost surely, 2^65157274741 is an apocalyptic number.

It is an amenable number.

65157274741 is a deficient number, since it is larger than the sum of its proper divisors (5012098071).

65157274741 is a wasteful number, since it uses less digits than its factorization.

65157274741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5012098070.

The product of its digits is 1646400, while the sum is 49.

The spelling of 65157274741 in words is "sixty-five billion, one hundred fifty-seven million, two hundred seventy-four thousand, seven hundred forty-one".