124561535455 has 16 divisors (see below), whose sum is σ = 170833411584. Its totient is φ = 85410542880.

The previous prime is 124561535443. The next prime is 124561535473. The reversal of 124561535455 is 554535165421.

It is a happy number.

It is not a de Polignac number, because 124561535455 - 2²¹ = 124559438303 is a prime.

It is a super-2 number, since 2×124561535455² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1372950 + ... + 1460860.

It is an arithmetic number, because the mean of its divisors is an integer number (10677088224).

Almost surely, 2^124561535455 is an apocalyptic number.

124561535455 is a deficient number, since it is larger than the sum of its proper divisors (46271876129).

124561535455 is an equidigital number, since it uses as much as digits as its factorization.

124561535455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128406.

The product of its digits is 1800000, while the sum is 46.

The spelling of 124561535455 in words is "one hundred twenty-four billion, five hundred sixty-one million, five hundred thirty-five thousand, four hundred fifty-five".