150616661060666 has 4 divisors (see below), whose sum is σ = 225924991591002. Its totient is φ = 75308330530332.

The previous prime is 150616661060639. The next prime is 150616661060687. The reversal of 150616661060666 is 666060166616051.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 76318656963025 + 74298004097641 = 8736055^2 + 8619629^2 .

It is a super-2 number, since 2×150616661060666² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37654165265165 + ... + 37654165265168.

Almost surely, 2^{150616661060666} is an apocalyptic number.

150616661060666 is a deficient number, since it is larger than the sum of its proper divisors (75308330530336).

150616661060666 is an equidigital number, since it uses as much as digits as its factorization.

150616661060666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75308330530335.

The product of its (nonzero) digits is 8398080, while the sum is 56.

The spelling of 150616661060666 in words is "one hundred fifty trillion, six hundred sixteen billion, six hundred sixty-one million, sixty thousand, six hundred sixty-six".