153640897541 has 2 divisors, whose sum is σ = 153640897542. Its totient is φ = 153640897540.

The previous prime is 153640897499. The next prime is 153640897559. The reversal of 153640897541 is 145798046351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101541009025 + 52099888516 = 318655^2 + 228254^2 .

It is a cyclic number.

It is not a de Polignac number, because 153640897541 - 2⁶ = 153640897477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (153640827541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76820448770 + 76820448771.

It is an arithmetic number, because the mean of its divisors is an integer number (76820448771).

Almost surely, 2^153640897541 is an apocalyptic number.

It is an amenable number.

153640897541 is a deficient number, since it is larger than the sum of its proper divisors (1).

153640897541 is an equidigital number, since it uses as much as digits as its factorization.

153640897541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 153640897541 in words is "one hundred fifty-three billion, six hundred forty million, eight hundred ninety-seven thousand, five hundred forty-one".