155715000600661 has 8 divisors (see below), whose sum is σ = 159471060906240. Its totient is φ = 151977397594608.

The previous prime is 155715000600641. The next prime is 155715000600689. The reversal of 155715000600661 is 166006000517551.

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

It is a cyclic number.

It is not a de Polignac number, because 155715000600661 - 2¹⁹ = 155715000076373 is a prime.

It is a super-2 number, since 2×155715000600661² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155715000600641) 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, 4614307806 + ... + 4614341551.

It is an arithmetic number, because the mean of its divisors is an integer number (19933882613280).

Almost surely, 2^{155715000600661} is an apocalyptic number.

It is an amenable number.

155715000600661 is a deficient number, since it is larger than the sum of its proper divisors (3756060305579).

155715000600661 is an equidigital number, since it uses as much as digits as its factorization.

155715000600661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9228649763.

The product of its (nonzero) digits is 189000, while the sum is 43.

The spelling of 155715000600661 in words is "one hundred fifty-five trillion, seven hundred fifteen billion, six hundred thousand, six hundred sixty-one".