55551105505511 has 64 divisors (see below), whose sum is σ = 72072215424000. Its totient is φ = 41546363443200.

The previous prime is 55551105505433. The next prime is 55551105505531. The reversal of 55551105505511 is 11550550115555.

It is not a de Polignac number, because 55551105505511 - 2⁴² = 51153058994407 is a prime.

It is a super-2 number, since 2×55551105505511² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55551105505531) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 302888465 + ... + 303071813.

It is an arithmetic number, because the mean of its divisors is an integer number (1126128366000).

Almost surely, 2^{55551105505511} is an apocalyptic number.

55551105505511 is a deficient number, since it is larger than the sum of its proper divisors (16521109918489).

55551105505511 is a wasteful number, since it uses less digits than its factorization.

55551105505511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184200.

The product of its (nonzero) digits is 390625, while the sum is 44.

The spelling of 55551105505511 in words is "fifty-five trillion, five hundred fifty-one billion, one hundred five million, five hundred five thousand, five hundred eleven".