154214747661 has 16 divisors (see below), whose sum is σ = 227421334784. Its totient is φ = 92336480064.

The previous prime is 154214747639. The next prime is 154214747663. The reversal of 154214747661 is 166747412451.

It is not a de Polignac number, because 154214747661 - 2¹⁸ = 154214485517 is a prime.

It is a super-2 number, since 2×154214747661² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 154214747661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154214747663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53434021 + ... + 53436906.

It is an arithmetic number, because the mean of its divisors is an integer number (14213833424).

Almost surely, 2^154214747661 is an apocalyptic number.

It is an amenable number.

154214747661 is a deficient number, since it is larger than the sum of its proper divisors (73206587123).

154214747661 is a wasteful number, since it uses less digits than its factorization.

154214747661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106870980.

The product of its digits is 1128960, while the sum is 48.

The spelling of 154214747661 in words is "one hundred fifty-four billion, two hundred fourteen million, seven hundred forty-seven thousand, six hundred sixty-one".