154402551645 has 32 divisors (see below), whose sum is σ = 253002448512. Its totient is φ = 80365135872.

The previous prime is 154402551619. The next prime is 154402551649. The reversal of 154402551645 is 546155204451.

It is a happy number.

It is not a de Polignac number, because 154402551645 - 2¹⁶ = 154402486109 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 154402551597 and 154402551606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154402551649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 669157 + ... + 869813.

It is an arithmetic number, because the mean of its divisors is an integer number (7906326516).

Almost surely, 2^154402551645 is an apocalyptic number.

154402551645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

154402551645 is a deficient number, since it is larger than the sum of its proper divisors (98599896867).

154402551645 is a wasteful number, since it uses less digits than its factorization.

154402551645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201901.

The product of its (nonzero) digits is 480000, while the sum is 42.

The spelling of 154402551645 in words is "one hundred fifty-four billion, four hundred two million, five hundred fifty-one thousand, six hundred forty-five".