154203035432661 has 12 divisors (see below), whose sum is σ = 230987262952992. Its totient is φ = 102802023621612.

The previous prime is 154203035432617. The next prime is 154203035432707. The reversal of 154203035432661 is 166234530302451.

154203035432661 is a `hidden beast` number, since 1 + 5 + 4 + 2 + 0 + 30 + 354 + 3 + 266 + 1 = 666.

It is not a de Polignac number, because 154203035432661 - 2¹³ = 154203035424469 is a prime.

It is a super-2 number, since 2×154203035432661² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154203035432561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 317290196121 + ... + 317290196606.

It is an arithmetic number, because the mean of its divisors is an integer number (19248938579416).

Almost surely, 2^{154203035432661} is an apocalyptic number.

It is an amenable number.

154203035432661 is a deficient number, since it is larger than the sum of its proper divisors (76784227520331).

154203035432661 is an frugal number, since it uses more digits than its factorization.

154203035432661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634580392742 (or 634580392730 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 45.

The spelling of 154203035432661 in words is "one hundred fifty-four trillion, two hundred three billion, thirty-five million, four hundred thirty-two thousand, six hundred sixty-one".