154945226761 has 8 divisors (see below), whose sum is σ = 168340765320. Its totient is φ = 141760641792.

The previous prime is 154945226749. The next prime is 154945226767. The reversal of 154945226761 is 167622549451.

It can be written as a sum of positive squares in 4 ways, for example, as 4001321536 + 150943905225 = 63256^2 + 388515^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 154945226761 - 2²¹ = 154943129609 is a prime.

It is a super-2 number, since 2×154945226761² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 154945226699 and 154945226708.

It is not an unprimeable number, because it can be changed into a prime (154945226767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52736866 + ... + 52739803.

It is an arithmetic number, because the mean of its divisors is an integer number (21042595665).

Almost surely, 2^154945226761 is an apocalyptic number.

It is an amenable number.

154945226761 is a deficient number, since it is larger than the sum of its proper divisors (13395538559).

154945226761 is a wasteful number, since it uses less digits than its factorization.

154945226761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105476795.

The product of its digits is 3628800, while the sum is 52.

The spelling of 154945226761 in words is "one hundred fifty-four billion, nine hundred forty-five million, two hundred twenty-six thousand, seven hundred sixty-one".