156261606164566 has 32 divisors (see below), whose sum is σ = 283010224803840. Its totient is φ = 63284230808736.

The previous prime is 156261606164557. The next prime is 156261606164593. The reversal of 156261606164566 is 665461606162651.

It is a super-2 number, since 2×156261606164566² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4094457550 + ... + 4094495713.

It is an arithmetic number, because the mean of its divisors is an integer number (8844069525120).

Almost surely, 2^{156261606164566} is an apocalyptic number.

156261606164566 is a deficient number, since it is larger than the sum of its proper divisors (126748618639274).

156261606164566 is a wasteful number, since it uses less digits than its factorization.

156261606164566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8188953348.

The product of its (nonzero) digits is 55987200, while the sum is 61.

The spelling of 156261606164566 in words is "one hundred fifty-six trillion, two hundred sixty-one billion, six hundred six million, one hundred sixty-four thousand, five hundred sixty-six".