65554045557 has 128 divisors (see below), whose sum is σ = 120884563968. Its totient is φ = 30494361600.

The previous prime is 65554045547. The next prime is 65554045567. The reversal of 65554045557 is 75554045556.

It is an interprime number because it is at equal distance from previous prime (65554045547) and next prime (65554045567).

It is not a de Polignac number, because 65554045557 - 2⁸ = 65554045301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65554045547) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 50777082 + ... + 50778372.

It is an arithmetic number, because the mean of its divisors is an integer number (944410656).

Almost surely, 2^65554045557 is an apocalyptic number.

It is an amenable number.

65554045557 is a deficient number, since it is larger than the sum of its proper divisors (55330518411).

65554045557 is a wasteful number, since it uses less digits than its factorization.

65554045557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819.

The product of its (nonzero) digits is 10500000, while the sum is 51.

Subtracting 65554045557 from its reverse (75554045556), we obtain a palindrome (9999999999).

The spelling of 65554045557 in words is "sixty-five billion, five hundred fifty-four million, forty-five thousand, five hundred fifty-seven".