161554700154 has 16 divisors (see below), whose sum is σ = 337157635392. Its totient is φ = 51510194208.

The previous prime is 161554700149. The next prime is 161554700161. The reversal of 161554700154 is 451007455161.

It is a super-2 number, since 2×161554700154² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 585342979 + ... + 585343254.

It is an arithmetic number, because the mean of its divisors is an integer number (21072352212).

Almost surely, 2^161554700154 is an apocalyptic number.

161554700154 is an abundant number, since it is smaller than the sum of its proper divisors (175602935238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161554700154 is a wasteful number, since it uses less digits than its factorization.

161554700154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170686261.

The product of its (nonzero) digits is 84000, while the sum is 39.

The spelling of 161554700154 in words is "one hundred sixty-one billion, five hundred fifty-four million, seven hundred thousand, one hundred fifty-four".