65561403135 has 96 divisors (see below), whose sum is σ = 113176092672. Its totient is φ = 32395334400.

The previous prime is 65561403121. The next prime is 65561403139. The reversal of 65561403135 is 53130416556.

It is not a de Polignac number, because 65561403135 - 2⁴ = 65561403119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65561403093 and 65561403102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65561403139) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 56959810 + ... + 56960960.

It is an arithmetic number, because the mean of its divisors is an integer number (1178917632).

Almost surely, 2^65561403135 is an apocalyptic number.

65561403135 is a deficient number, since it is larger than the sum of its proper divisors (47614689537).

65561403135 is a wasteful number, since it uses less digits than its factorization.

65561403135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421 (or 1402 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 39.

The spelling of 65561403135 in words is "sixty-five billion, five hundred sixty-one million, four hundred three thousand, one hundred thirty-five".