154640216150639 has 2 divisors, whose sum is σ = 154640216150640. Its totient is φ = 154640216150638.

The previous prime is 154640216150587. The next prime is 154640216150659. The reversal of 154640216150639 is 936051612046451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 154640216150639 - 2²⁴ = 154640199373423 is a prime.

It is a super-2 number, since 2×154640216150639² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154640216150659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77320108075319 + 77320108075320.

It is an arithmetic number, because the mean of its divisors is an integer number (77320108075320).

Almost surely, 2^{154640216150639} is an apocalyptic number.

154640216150639 is a deficient number, since it is larger than the sum of its proper divisors (1).

154640216150639 is an equidigital number, since it uses as much as digits as its factorization.

154640216150639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4665600, while the sum is 53.

The spelling of 154640216150639 in words is "one hundred fifty-four trillion, six hundred forty billion, two hundred sixteen million, one hundred fifty thousand, six hundred thirty-nine".