65867240157 has 4 divisors (see below), whose sum is σ = 87822986880. Its totient is φ = 43911493436.

The previous prime is 65867240099. The next prime is 65867240189. The reversal of 65867240157 is 75104276856.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65867240157 - 2¹⁹ = 65866715869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65867040157) 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, 10977873357 + ... + 10977873362.

It is an arithmetic number, because the mean of its divisors is an integer number (21955746720).

Almost surely, 2^65867240157 is an apocalyptic number.

It is an amenable number.

65867240157 is a deficient number, since it is larger than the sum of its proper divisors (21955746723).

65867240157 is a wasteful number, since it uses less digits than its factorization.

65867240157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21955746722.

The product of its (nonzero) digits is 2822400, while the sum is 51.

The spelling of 65867240157 in words is "sixty-five billion, eight hundred sixty-seven million, two hundred forty thousand, one hundred fifty-seven".