5155561520061 has 8 divisors (see below), whose sum is σ = 7095826608384. Its totient is φ = 3326168722560.

The previous prime is 5155561520047. The next prime is 5155561520063. The reversal of 5155561520061 is 1600251655515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5155561520061 - 2²³ = 5155553131453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5155561519995 and 5155561520022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5155561520063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27718072596 + ... + 27718072781.

It is an arithmetic number, because the mean of its divisors is an integer number (886978326048).

Almost surely, 2^{5155561520061} is an apocalyptic number.

It is an amenable number.

5155561520061 is a deficient number, since it is larger than the sum of its proper divisors (1940265088323).

5155561520061 is a wasteful number, since it uses less digits than its factorization.

5155561520061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55436145411.

The product of its (nonzero) digits is 225000, while the sum is 42.

The spelling of 5155561520061 in words is "five trillion, one hundred fifty-five billion, five hundred sixty-one million, five hundred twenty thousand, sixty-one".