55527765645 has 32 divisors (see below), whose sum is σ = 97177029120. Its totient is φ = 26851487040.

The previous prime is 55527765637. The next prime is 55527765647. The reversal of 55527765645 is 54656772555.

It is not a de Polignac number, because 55527765645 - 2³ = 55527765637 is a prime.

It is a super-3 number, since 3×55527765645³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55527765647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 381439 + ... + 506508.

It is an arithmetic number, because the mean of its divisors is an integer number (3036782160).

Almost surely, 2^55527765645 is an apocalyptic number.

55527765645 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55527765645 is a deficient number, since it is larger than the sum of its proper divisors (41649263475).

55527765645 is a wasteful number, since it uses less digits than its factorization.

55527765645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888345.

The product of its digits is 44100000, while the sum is 57.

The spelling of 55527765645 in words is "fifty-five billion, five hundred twenty-seven million, seven hundred sixty-five thousand, six hundred forty-five".