155516506505061 has 8 divisors (see below), whose sum is σ = 223305752930400. Its totient is φ = 95702465541552.

The previous prime is 155516506504967. The next prime is 155516506505081. The reversal of 155516506505061 is 160505605615551.

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

It is not a de Polignac number, because 155516506505061 - 2⁴² = 151118459993957 is a prime.

It is a super-2 number, since 2×155516506505061² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155516506504995 and 155516506505013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155516506505081) 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, 1993801365411 + ... + 1993801365488.

It is an arithmetic number, because the mean of its divisors is an integer number (27913219116300).

Almost surely, 2^{155516506505061} is an apocalyptic number.

It is an amenable number.

155516506505061 is a deficient number, since it is larger than the sum of its proper divisors (67789246425339).

155516506505061 is a wasteful number, since it uses less digits than its factorization.

155516506505061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3987602730915.

The product of its (nonzero) digits is 3375000, while the sum is 51.

The spelling of 155516506505061 in words is "one hundred fifty-five trillion, five hundred sixteen billion, five hundred six million, five hundred five thousand, sixty-one".