55010056611561 has 24 divisors (see below), whose sum is σ = 81302662305984. Its totient is φ = 33015413333760.

The previous prime is 55010056611551. The next prime is 55010056611583. The reversal of 55010056611561 is 16511665001055.

It is not a de Polignac number, because 55010056611561 - 2⁵ = 55010056611529 is a prime.

It is a super-2 number, since 2×55010056611561² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55010056611551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1379300470 + ... + 1379340351.

It is an arithmetic number, because the mean of its divisors is an integer number (3387610929416).

Almost surely, 2^{55010056611561} is an apocalyptic number.

55010056611561 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

55010056611561 is a deficient number, since it is larger than the sum of its proper divisors (26292605694423).

55010056611561 is a wasteful number, since it uses less digits than its factorization.

55010056611561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758640881 (or 2758640864 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 55010056611561 in words is "fifty-five trillion, ten billion, fifty-six million, six hundred eleven thousand, five hundred sixty-one".